Revert "Fixes listview shrinkwrap and hidden semantics node gets updated...

Revert "Fixes listview shrinkwrap and hidden semantics node gets updated incorrectly. (#88814)" (#88886)

This reverts commit 0e9665e4.

packages/flutter/lib/src/rendering/proxy_box.dart

@@ -5056,6 +5056,7 @@ class RenderIndexedSemantics extends RenderProxyBox {
   @override
   void describeSemanticsConfiguration(SemanticsConfiguration config) {
     super.describeSemanticsConfiguration(config);
+    config.isSemanticBoundary = true;
     config.indexInParent = index;
   }
 

packages/flutter/lib/src/rendering/viewport.dart

@@ -1920,14 +1920,6 @@ class RenderShrinkWrappingViewport extends RenderViewportBase<SliverLogicalConta
     _maxScrollExtent = 0.0;
     _shrinkWrapExtent = 0.0;
     _hasVisualOverflow = false;
-    switch (cacheExtentStyle) {
-      case CacheExtentStyle.pixel:
-        _calculatedCacheExtent = cacheExtent;
-        break;
-      case CacheExtentStyle.viewport:
-        _calculatedCacheExtent = mainAxisExtent * _cacheExtent;
-        break;
-    }
     return layoutChildSequence(
       child: firstChild,
       scrollOffset: math.max(0.0, correctedOffset),
@@ -1938,8 +1930,8 @@ class RenderShrinkWrappingViewport extends RenderViewportBase<SliverLogicalConta
       crossAxisExtent: crossAxisExtent,
       growthDirection: GrowthDirection.forward,
       advance: childAfter,
-      remainingCacheExtent: mainAxisExtent + 2 * _calculatedCacheExtent!,
-      cacheOrigin: -_calculatedCacheExtent!,
+      remainingCacheExtent: mainAxisExtent + 2 * _cacheExtent,
+      cacheOrigin: -_cacheExtent,
     );
   }
 

packages/flutter/test/widgets/list_view_test.dart

@@ -310,65 +310,6 @@ void main() {
     expect(find.text('19'), findsOneWidget);
   });
 
-  testWidgets('ListView with shrink wrap in bounded context correctly uses cache extent', (WidgetTester tester) async {
-    final SemanticsHandle handle = tester.ensureSemantics();
-    await tester.pumpWidget(
-      Directionality(
-        textDirection: TextDirection.ltr,
-        child: SizedBox(
-          height: 400,
-          child: ListView(
-            itemExtent: 100.0,
-            shrinkWrap: true,
-            children: List<Widget>.generate(20, (int i) {
-              return Text('Text $i');
-            }),
-          ),
-        ),
-      ),
-    );
-    expect(tester.getSemantics(find.text('Text 5')), matchesSemantics(isHidden: false));
-    expect(tester.getSemantics(find.text('Text 6', skipOffstage: false)), matchesSemantics(isHidden: true));
-    expect(tester.getSemantics(find.text('Text 7', skipOffstage: false)), matchesSemantics(isHidden: true));
-    expect(tester.getSemantics(find.text('Text 8', skipOffstage: false)), matchesSemantics(isHidden: true));
-    handle.dispose();
-  });
-
-  testWidgets('ListView hidden items should stay hidden if their semantics are updated', (WidgetTester tester) async {
-    final SemanticsHandle handle = tester.ensureSemantics();
-    await tester.pumpWidget(
-      Directionality(
-        textDirection: TextDirection.ltr,
-        child: SizedBox(
-          height: 400,
-          child: ListView(
-            itemExtent: 100.0,
-            shrinkWrap: true,
-            children: List<Widget>.generate(20, (int i) {
-              return Text('Text $i');
-            }),
-          ),
-        ),
-      ),
-    );
-    // Scrollable maybe be marked dirty after layout.
-    await tester.pumpAndSettle();
-    expect(tester.getSemantics(find.text('Text 5')), matchesSemantics(isHidden: false));
-    expect(tester.getSemantics(find.text('Text 6', skipOffstage: false)), matchesSemantics(isHidden: true));
-    expect(tester.getSemantics(find.text('Text 7', skipOffstage: false)), matchesSemantics(isHidden: true));
-    expect(tester.getSemantics(find.text('Text 8', skipOffstage: false)), matchesSemantics(isHidden: true));
-
-    // Marks Text 6 semantics as dirty.
-    final RenderObject text6 = tester.renderObject(find.text('Text 6', skipOffstage: false));
-    text6.markNeedsSemanticsUpdate();
-
-    // Verify the semantics is still hidden.
-    await tester.pump();
-    expect(tester.getSemantics(find.text('Text 6', skipOffstage: false)), matchesSemantics(isHidden: true));
-
-    handle.dispose();
-  });
-
   testWidgets('didFinishLayout has correct indices', (WidgetTester tester) async {
     final TestSliverChildListDelegate delegate = TestSliverChildListDelegate(
       List<Widget>.generate(