a918c608b8
Reverts: flutter/engine#45166 Initiated by: jiahaog Reason for reverting: This commit seems to cause the debug banner of a material app to be unnecessarily blurred. For example, one of the tests runs the following flutter app: <details> <summary>Code</summary> ```dart import 'package:flutter/material.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return Materia Original PR Author: Kingtous Reviewed By: {yjbanov, harryterkelsen} This change reverts the following previous change: Hi from [Dora team](https://www.dora.run/), which powers web developers to build their 3d websites in just a few seconds. This PR fixes: https://github.com/flutter/flutter/issues/133443, related: https://github.com/flutter/flutter/issues/58546 The original codes attempts to cache the css string but it causes bugs when encountering nested the same mask filter blur. We should also set `filter` properties when currentFilter == incoming mask filter using the cached css string, not just ignore it. [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style