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

fbshipit-source-id: 4b505f1df9c7c495d316e6fbf1498af94aaca959

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

@@ -332,7 +332,7 @@ const definitions: FeatureFlagDefinitions = {
       ossReleaseStage: 'none',
     },
     fixMountingCoordinatorReportedPendingTransactionsOnAndroid: {
-      defaultValue: false,
+      defaultValue: true,
       metadata: {
         dateAdded: '2024-08-27',
         description:
@@ -340,7 +340,7 @@ const definitions: FeatureFlagDefinitions = {
         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.
  */