Add support for type-safe plugin apply (#150958)

The Gradle Kotlin DSL also allows for type-safe application of the Flutter Gradle plugin, which is currently undetected by the CLI
```kotlin
plugins {
  dev.flutter.`flutter-gradle-plugin`
}
```

Please note that the added test case isn't ideal, since the example gradle isn't actually valid kotlin DSL, however the `kotlin host app language with Gradle Kotlin DSL` is identical

Fixes #149859

Author: DRSchlaubi

packages/flutter_tools/lib/src/project.dart

@@ -544,7 +544,9 @@ class AndroidProject extends FlutterProjectPlatform {
         // pluginManagement block of the settings.gradle file.
         // See https://docs.gradle.org/current/userguide/composite_builds.html#included_plugin_builds,
         // as well as the settings.gradle and build.gradle templates.
-        final bool declarativeApply = line.contains('dev.flutter.flutter-gradle-plugin');
+        final bool declarativeApply = line.contains(
+          RegExp(r'dev\.flutter\.(?:(?:flutter-gradle-plugin)|(?:`flutter-gradle-plugin`))'),
+        );
 
         // This case allows for flutter run/build to work for modules. It does
         // not guarantee the Flutter Gradle Plugin is applied.

packages/flutter_tools/test/general.shard/project_test.dart

@@ -805,6 +805,28 @@ plugins {
     id "kotlin-android"
     id "dev.flutter.flutter-gradle-plugin"
 }
+''';
+        });
+        expect(project.android.isKotlin, isTrue);
+      }, overrides: <Type, Generator>{
+        FileSystem: () => fs,
+        ProcessManager: () => FakeProcessManager.any(),
+        XcodeProjectInterpreter: () => xcodeProjectInterpreter,
+        FlutterProjectFactory: () => flutterProjectFactory,
+      });
+
+    testUsingContext('kotlin host app language with Gradle Kotlin DSL and typesafe plugin id', () async {
+      final FlutterProject project = await someProject();
+
+        addAndroidGradleFile(project.directory,
+          kotlinDsl: true,
+          gradleFileContent: () {
+            return '''
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    dev.flutter.`flutter-gradle-plugin`
+}
 ''';
         });
         expect(project.android.isKotlin, isTrue);