Update for Flutter 3.10 beta (#1746)

## Pre-launch Checklist

- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I updated/added relevant documentation (doc comments with `///`).
- [ ] All existing and new tests are passing.

---------

Co-authored-by: David Iglesias <ditman@gmail.com>
Co-authored-by: Mark Thompson <2554588+MarkTechson@users.noreply.github.com>
Co-authored-by: John Ryan <ryjohn@google.com>

experimental/context_menus/pubspec.yaml

@@ -20,7 +20,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 version: 1.0.0+1
 
 environment:
-  sdk: '>=2.19.5 <4.0.0'
+  sdk: ^3.0.0-0
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions

experimental/context_menus/test/custom_buttons_page_test.dart

@@ -38,22 +38,18 @@ void main() {
       case TargetPlatform.iOS:
         expect(find.byType(CupertinoTextSelectionToolbarButton), findsNothing);
         expect(find.byType(CupertinoButton), findsNWidgets(2));
-        break;
       case TargetPlatform.macOS:
         expect(find.byType(CupertinoButton), findsNWidgets(2));
         expect(find.byType(CupertinoDesktopTextSelectionToolbarButton),
             findsNothing);
-        break;
       case TargetPlatform.android:
       case TargetPlatform.fuchsia:
         expect(find.byType(CupertinoButton), findsNWidgets(1));
         expect(find.byType(TextSelectionToolbarTextButton), findsNothing);
-        break;
       case TargetPlatform.linux:
       case TargetPlatform.windows:
         expect(find.byType(CupertinoButton), findsNWidgets(1));
         expect(find.byType(DesktopTextSelectionToolbarButton), findsNothing);
-        break;
     }
   });
 }

experimental/context_menus/test/custom_menu_page_test.dart

@@ -38,20 +38,16 @@ void main() {
       case TargetPlatform.iOS:
         expect(
             find.byType(CupertinoTextSelectionToolbarButton), findsNWidgets(2));
-        break;
       case TargetPlatform.macOS:
         expect(find.byType(CupertinoDesktopTextSelectionToolbarButton),
             findsNWidgets(2));
-        break;
       case TargetPlatform.android:
       case TargetPlatform.fuchsia:
         expect(find.byType(TextSelectionToolbarTextButton), findsNWidgets(1));
-        break;
       case TargetPlatform.linux:
       case TargetPlatform.windows:
         expect(
             find.byType(DesktopTextSelectionToolbarButton), findsNWidgets(1));
-        break;
     }
   });
 }

experimental/context_menus/test/default_values_page_test.dart

@@ -45,20 +45,16 @@ void main() {
       case TargetPlatform.iOS:
         expect(
             find.byType(CupertinoTextSelectionToolbarButton), findsNWidgets(2));
-        break;
       case TargetPlatform.macOS:
         expect(find.byType(CupertinoDesktopTextSelectionToolbarButton),
             findsNWidgets(2));
-        break;
       case TargetPlatform.android:
       case TargetPlatform.fuchsia:
         expect(find.byType(TextSelectionToolbarTextButton), findsNWidgets(1));
-        break;
       case TargetPlatform.linux:
       case TargetPlatform.windows:
         expect(
             find.byType(DesktopTextSelectionToolbarButton), findsNWidgets(1));
-        break;
     }
 
     // Tap the next field to hide the context menu.

experimental/context_menus/test/email_button_page_test.dart

@@ -51,20 +51,16 @@ void main() {
       case TargetPlatform.iOS:
         expect(
             find.byType(CupertinoTextSelectionToolbarButton), findsNWidgets(2));
-        break;
       case TargetPlatform.macOS:
         expect(find.byType(CupertinoDesktopTextSelectionToolbarButton),
             findsNWidgets(2));
-        break;
       case TargetPlatform.android:
       case TargetPlatform.fuchsia:
         expect(find.byType(TextSelectionToolbarTextButton), findsNWidgets(3));
-        break;
       case TargetPlatform.linux:
       case TargetPlatform.windows:
         expect(
             find.byType(DesktopTextSelectionToolbarButton), findsNWidgets(3));
-        break;
     }
 
     // Click on "Copy" to hide the context menu.
@@ -99,20 +95,16 @@ void main() {
       case TargetPlatform.iOS:
         expect(
             find.byType(CupertinoTextSelectionToolbarButton), findsNWidgets(3));
-        break;
       case TargetPlatform.macOS:
         expect(find.byType(CupertinoDesktopTextSelectionToolbarButton),
             findsNWidgets(3));
-        break;
       case TargetPlatform.android:
       case TargetPlatform.fuchsia:
         expect(find.byType(TextSelectionToolbarTextButton), findsNWidgets(4));
-        break;
       case TargetPlatform.linux:
       case TargetPlatform.windows:
         expect(
             find.byType(DesktopTextSelectionToolbarButton), findsNWidgets(4));
-        break;
     }
   });
 }

experimental/context_menus/test/field_types_page_test.dart

@@ -45,19 +45,15 @@ void main() {
       switch (defaultTargetPlatform) {
         case TargetPlatform.iOS:
           expect(find.byType(CupertinoTextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.android:
           expect(find.byType(TextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.fuchsia:
         case TargetPlatform.linux:
         case TargetPlatform.windows:
           expect(find.byType(DesktopTextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.macOS:
           expect(find.byType(CupertinoDesktopTextSelectionToolbar),
               findsOneWidget);
-          break;
       }
 
       // Tap the next field to hide the context menu.
@@ -84,13 +80,11 @@ void main() {
         case TargetPlatform.android:
         case TargetPlatform.fuchsia:
           expect(find.byType(CupertinoTextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.macOS:
         case TargetPlatform.linux:
         case TargetPlatform.windows:
           expect(find.byType(CupertinoDesktopTextSelectionToolbar),
               findsOneWidget);
-          break;
       }
 
       // Tap the next field to hide the context menu.
@@ -114,19 +108,15 @@ void main() {
       switch (defaultTargetPlatform) {
         case TargetPlatform.iOS:
           expect(find.byType(CupertinoTextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.android:
           expect(find.byType(TextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.fuchsia:
         case TargetPlatform.linux:
         case TargetPlatform.windows:
           expect(find.byType(DesktopTextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.macOS:
           expect(find.byType(CupertinoDesktopTextSelectionToolbar),
               findsOneWidget);
-          break;
       }
 
       // Tap the next field to hide the context menu.
@@ -171,19 +161,15 @@ void main() {
       switch (defaultTargetPlatform) {
         case TargetPlatform.iOS:
           expect(find.byType(CupertinoTextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.android:
           expect(find.byType(TextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.fuchsia:
         case TargetPlatform.linux:
         case TargetPlatform.windows:
           expect(find.byType(DesktopTextSelectionToolbar), findsOneWidget);
-          break;
         case TargetPlatform.macOS:
           expect(find.byType(CupertinoDesktopTextSelectionToolbar),
               findsOneWidget);
-          break;
       }
     },
     variant: TargetPlatformVariant.all(),