Clean up dependencies across packages (#2585)

Drop dep on pkg:collection, use new bits in Dart 3.0
Fixed very old dep in navigation_and_routing – bug was fixed long ago

place_tracker/.gitignore

@@ -69,6 +69,3 @@
 !**/ios/**/default.pbxuser
 !**/ios/**/default.perspectivev3
 !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
-
-# Flutter Web files
-lib/generated_plugin_registrant.dart

place_tracker/lib/place_map.dart

@@ -5,7 +5,6 @@
 import 'dart:async';
 import 'dart:math';
 
-import 'package:collection/collection.dart';
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:google_maps_flutter/google_maps_flutter.dart';
@@ -279,9 +278,8 @@ class _PlaceMapState extends State<PlaceMap> {
         // At this point, we know the places have been updated from the list
         // view. We need to reconfigure the map to respect the updates.
         for (final place in newConfiguration.places) {
-          final oldPlace = _configuration!.places.firstWhereOrNull(
-            (p) => p.id == place.id,
-          );
+          final oldPlace =
+              _configuration!.places.where((p) => p.id == place.id).firstOrNull;
           if (oldPlace == null || oldPlace != place) {
             // New place or updated place.
             _updateExistingPlaceMarker(place: place);

place_tracker/pubspec.yaml

@@ -15,7 +15,6 @@ dependencies:
   provider: ^6.0.2
   uuid: ^4.0.0
   go_router: ">=10.0.0 <15.0.0"
-  collection: ^1.16.0
 
 dev_dependencies:
   analysis_defaults: