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
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