Update add to app code to run on modern versions of agp and gradle. (#2330)

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add_to_app/plugin/android_using_plugin/gradle.properties

@@ -19,3 +19,5 @@ android.useAndroidX=true
 android.enableJetifier=true
 # Kotlin code style for this project: "official" or "obsolete":
 kotlin.code.style=official
+android.nonTransitiveRClass=false
+android.nonFinalResIds=false