Refactor 'FakeSceneBuilder' to use 'NoSuchMethod Forwarding' (#101970)

packages/flutter/test/rendering/layers_test.dart

@@ -756,27 +756,28 @@ class FakeSceneBuilder extends Fake implements SceneBuilder {
   }
 
   bool pushedOpacity = false;
+  bool pushedOffset = false;
+  bool addedPicture = false;
+
   @override
-  OpacityEngineLayer pushOpacity(int alpha, {Offset? offset = Offset.zero, OpacityEngineLayer? oldLayer}) {
+  dynamic noSuchMethod(Invocation invocation) {
+    // Use noSuchMethod forwarding instead of override these methods to make it easier
+    // for these methods to add new optional arguments in the future.
+    switch (invocation.memberName) {
+      case #pushOpacity:
         pushedOpacity = true;
         return FakeOpacityEngineLayer();
-  }
-
-  bool pushedOffset = false;
-  @override
-  OffsetEngineLayer pushOffset(double x, double y, {OffsetEngineLayer? oldLayer}) {
+      case #pushOffset:
         pushedOffset = true;
         return FakeOffsetEngineLayer();
-  }
-
-  bool addedPicture = false;
-  @override
-  void addPicture(Offset offset, Picture picture, {bool isComplexHint = false, bool willChangeHint = false}) {
+      case #addPicture:
         addedPicture = true;
+        return;
+      case #pop:
+        return;
+    }
+    super.noSuchMethod(invocation);
   }
-
-  @override
-  void pop() {}
 }
 
 class FakeOpacityEngineLayer extends FakeEngineLayer implements OpacityEngineLayer {}