[web] exclude bitrotten context_menu_action_test.dart from CanvasKit shard (#93268)
[web] exclude bitrotten context_menu_action_test.dart from CanvasKit shard (#93268)


flutter/flutter,tvolkert/flutter,tvolkert/flutter,flutter/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,tvolkert/flutter,tvolkert/flutter,tvolkert/flutter