[Android] Support Android 34 (#137191)

Adds support for Android 34 in the following ways:

- Bumps integration tests compile SDK versions 33 --> 34
- Bumps template compile SDK version 33 --> 34
- Also changes deprecated `compileSdkVersion` to `compileSdk`

Part of https://github.com/flutter/flutter/issues/134220

examples/flutter_view/android/app/build.gradle

@@ -30,7 +30,7 @@ apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
     namespace "com.example.view"
-    compileSdkVersion flutter.compileSdkVersion
+    compileSdk flutter.compileSdkVersion
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8