[webview_flutter] Skip "Video playback policy" drive tests (flutter#6747)

Temporary solution for flutter#148487 to unblock tree.

Author: vashworth

packages/webview_flutter/webview_flutter/example/integration_test/webview_flutter_test.dart

@@ -357,7 +357,9 @@ Future<void> main() async {
           .runJavaScriptReturningResult('isFullScreen();') as bool;
       expect(fullScreen, false);
     });
-  });
+  },
+      // TODO(bparrishMines): Stop skipping once https://github.com/flutter/flutter/issues/148487 is resolved
+      skip: true);
 
   group('Audio playback policy', () {
     late String audioTestBase64;