Ship useNativeEqualsInNativeReadableArrayAndroid and useNativeTransformHelperAndroid to stable (#53372)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53372

We verified that those feature flags are not regressing the experience + we got confirmation from Software Mansion that the fix
is effectively mitigating the regression on Android mounting.

Hence we can ship this to production.

Fixes: https://github.com/facebook/react-native/issues/51869

Changelog:
[Android] [Fixed] - Fix mounting is very slow on Android by shipping native transform optimizations

Reviewed By: javache

Differential Revision: D80624739

fbshipit-source-id: 2e185434f08b5ea0339d59a6ea006017e5abeff2

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<<4cc61b5f71805589fa91abbdefb5eade>>
+ * @generated SignedSource<<69634efaec0f2c63ac2d1ce20dd5c2ac>>
  */
 
 /**
@@ -139,9 +139,9 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun useFabricInterop(): Boolean = true
 
-  override fun useNativeEqualsInNativeReadableArrayAndroid(): Boolean = false
+  override fun useNativeEqualsInNativeReadableArrayAndroid(): Boolean = true
 
-  override fun useNativeTransformHelperAndroid(): Boolean = false
+  override fun useNativeTransformHelperAndroid(): Boolean = true
 
   override fun useNativeViewConfigsInBridgelessMode(): Boolean = false
 

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsOverrides_RNOSS_Experimental_Android.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<<1f89971ab4d5b2ee27ace3a3c8da78cf>>
+ * @generated SignedSource<<4feeb3c1789d8169dd93bee7ae1ff1ac>>
  */
 
 /**
@@ -26,8 +26,4 @@ public open class ReactNativeFeatureFlagsOverrides_RNOSS_Experimental_Android :
   override fun enableAccessibilityOrder(): Boolean = true
 
   override fun preventShadowTreeCommitExhaustion(): Boolean = true
-
-  override fun useNativeEqualsInNativeReadableArrayAndroid(): Boolean = true
-
-  override fun useNativeTransformHelperAndroid(): Boolean = true
 }

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<<a7f5d45347dee3c9c5b17731e1bf8993>>
+ * @generated SignedSource<<54a695ed4e9c536cd8650498b9dab2fc>>
  */
 
 /**
@@ -260,11 +260,11 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
   }
 
   bool useNativeEqualsInNativeReadableArrayAndroid() override {
-    return false;
+    return true;
   }
 
   bool useNativeTransformHelperAndroid() override {
-    return false;
+    return true;
   }
 
   bool useNativeViewConfigsInBridgelessMode() override {

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsOverridesOSSExperimental.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<<c9b7b95d3cc3fed879476f191a60d3f2>>
+ * @generated SignedSource<<77870f0db494c7b6932950a1fa475fdc>>
  */
 
 /**
@@ -34,14 +34,6 @@ class ReactNativeFeatureFlagsOverridesOSSExperimental : public ReactNativeFeatur
   bool preventShadowTreeCommitExhaustion() override {
     return true;
   }
-
-  bool useNativeEqualsInNativeReadableArrayAndroid() override {
-    return true;
-  }
-
-  bool useNativeTransformHelperAndroid() override {
-    return true;
-  }
 };
 
 } // namespace facebook::react

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

@@ -665,7 +665,7 @@ const definitions: FeatureFlagDefinitions = {
       ossReleaseStage: 'none',
     },
     useNativeEqualsInNativeReadableArrayAndroid: {
-      defaultValue: false,
+      defaultValue: true,
       metadata: {
         dateAdded: '2025-07-15',
         description:
@@ -673,17 +673,17 @@ const definitions: FeatureFlagDefinitions = {
         expectedReleaseValue: true,
         purpose: 'experimentation',
       },
-      ossReleaseStage: 'experimental',
+      ossReleaseStage: 'stable',
     },
     useNativeTransformHelperAndroid: {
-      defaultValue: false,
+      defaultValue: true,
       metadata: {
         dateAdded: '2025-07-15',
         description: 'Use a native implementation of TransformHelper',
         expectedReleaseValue: true,
         purpose: 'experimentation',
       },
-      ossReleaseStage: 'experimental',
+      ossReleaseStage: 'stable',
     },
     useNativeViewConfigsInBridgelessMode: {
       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<<f082e99b49f5206e95cf0ca3f92d2c1c>>
+ * @generated SignedSource<<66a3905e1c94e7769418becc3bace939>>
  * @flow strict
  * @noformat
  */
@@ -415,11 +415,11 @@ export const useFabricInterop: Getter<boolean> = createNativeFlagGetter('useFabr
 /**
  * Use a native implementation of equals in NativeReadableArray.
  */
-export const useNativeEqualsInNativeReadableArrayAndroid: Getter<boolean> = createNativeFlagGetter('useNativeEqualsInNativeReadableArrayAndroid', false);
+export const useNativeEqualsInNativeReadableArrayAndroid: Getter<boolean> = createNativeFlagGetter('useNativeEqualsInNativeReadableArrayAndroid', true);
 /**
  * Use a native implementation of TransformHelper
  */
-export const useNativeTransformHelperAndroid: Getter<boolean> = createNativeFlagGetter('useNativeTransformHelperAndroid', false);
+export const useNativeTransformHelperAndroid: Getter<boolean> = createNativeFlagGetter('useNativeTransformHelperAndroid', true);
 /**
  * When enabled, the native view configs are used in bridgeless mode.
  */