Mark override and dangerouslyReset in ReactNativeFeatureFlags as JVM static (#42908)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/42908

Changelog: [internal]

Just a small ergonomic improvement to do `ReactNativeFeatureFlags.override` instead of `ReactNativeFeatureFlags.INSTANCE.override` in Java.

We already did this for the methods to access the feature flags in the same class.

Reviewed By: rshest

Differential Revision: D53516254

fbshipit-source-id: cdaa90b3baae4f780a42a96ebb07de78bd968019

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlags.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<<f5d5bb65068bb515d33da8bff665dfd2>>
+ * @generated SignedSource<<435993f24b4bdc9740491d5540232a9c>>
  */
 
 /**
@@ -84,6 +84,7 @@ object ReactNativeFeatureFlags {
    * })
    * ```
    */
+  @JvmStatic
   fun override(provider: ReactNativeFeatureFlagsProvider) = accessor.override(provider)
 
   /**
@@ -95,6 +96,7 @@ object ReactNativeFeatureFlags {
    * call `dangerouslyReset` after destroying the runtime and `override`
    * again before initializing the new one.
    */
+  @JvmStatic
   fun dangerouslyReset() {
     // This is necessary when the accessor interops with C++ and we need to
     // remove the overrides set there.

packages/react-native/scripts/featureflags/templates/android/ReactNativeFeatureFlags.kt-template.js

@@ -61,6 +61,7 @@ ${Object.entries(definitions.common)
    * })
    * \`\`\`
    */
+  @JvmStatic
   fun override(provider: ReactNativeFeatureFlagsProvider) = accessor.override(provider)
 
   /**
@@ -72,6 +73,7 @@ ${Object.entries(definitions.common)
    * call \`dangerouslyReset\` after destroying the runtime and \`override\`
    * again before initializing the new one.
    */
+  @JvmStatic
   fun dangerouslyReset() {
     // This is necessary when the accessor interops with C++ and we need to
     // remove the overrides set there.