Ship fixMountingCoordinatorReportedPendingTransactionsOnAndroid feature flag by default

Summary:
Changelog: [internal]

This is stable after the last couple of fixes, so we can enable it by default. Enabling this just improves the accuracy of `IntersectionObserver` and the Event Timing API, and we still haven't shipped those to stable.

Reviewed By: GijsWeterings

Differential Revision: D72561256

Author: rubennorte

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<7c6e2d01585686b614664672367e9107>>
+ * @generated SignedSource<<7f3dba37b181d001a7f90d2e0e7a6452>>
  */
 
 /**
@@ -77,7 +77,7 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun fixMappingOfEventPrioritiesBetweenFabricAndReact(): Boolean = false
 
-  override fun fixMountingCoordinatorReportedPendingTransactionsOnAndroid(): Boolean = false
+  override fun fixMountingCoordinatorReportedPendingTransactionsOnAndroid(): Boolean = true
 
   override fun fuseboxEnabledRelease(): Boolean = false
 

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsDefaults.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<2fc4a56feb9686df603170c2ec8295ab>>
+ * @generated SignedSource<<d1f0ac93da2872e97ca83926348d1cce>>
  */
 
 /**
@@ -136,7 +136,7 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
   }
 
   bool fixMountingCoordinatorReportedPendingTransactionsOnAndroid() override {
-    return false;
+    return true;
   }
 
   bool fuseboxEnabledRelease() override {

packages/react-native/scripts/featureflags/ReactNativeFeatureFlags.config.js

@@ -332,15 +332,15 @@ const definitions: FeatureFlagDefinitions = {
       ossReleaseStage: 'none',
     },
     fixMountingCoordinatorReportedPendingTransactionsOnAndroid: {
-      defaultValue: false,
+      defaultValue: true,
       metadata: {
         dateAdded: '2024-08-27',
         description:
           'Fixes a limitation on Android where the mounting coordinator would report there are no pending transactions but some of them were actually not processed due to the use of the push model.',
         expectedReleaseValue: true,
         purpose: 'experimentation',
       },
-      ossReleaseStage: 'none',
+      ossReleaseStage: 'stable',
     },
     fuseboxEnabledRelease: {
       defaultValue: false,

packages/react-native/src/private/featureflags/ReactNativeFeatureFlags.js

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<90b82671674512dc6bed998c9a1c9a5a>>
+ * @generated SignedSource<<f20f2f58a3ee800913a15ab63e64f282>>
  * @flow strict
  */
 
@@ -269,7 +269,7 @@ export const fixMappingOfEventPrioritiesBetweenFabricAndReact: Getter<boolean> =
 /**
  * Fixes a limitation on Android where the mounting coordinator would report there are no pending transactions but some of them were actually not processed due to the use of the push model.
  */
-export const fixMountingCoordinatorReportedPendingTransactionsOnAndroid: Getter<boolean> = createNativeFlagGetter('fixMountingCoordinatorReportedPendingTransactionsOnAndroid', false);
+export const fixMountingCoordinatorReportedPendingTransactionsOnAndroid: Getter<boolean> = createNativeFlagGetter('fixMountingCoordinatorReportedPendingTransactionsOnAndroid', true);
 /**
  * Flag determining if the React Native DevTools (Fusebox) CDP backend should be enabled in release builds. This flag is global and should not be changed across React Host lifetimes.
  */