[LOCAL] Use legacy ReactFeatureFlags for 0.76

The d1ce8fa pick from 0.77 used the new ReactNativeFeatureFlags,
backport this.

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/HeadlessJsTaskService.java

@@ -179,7 +179,7 @@ protected ReactContext getReactContext() {
   }
 
   private void createReactContextAndScheduleTask(final HeadlessJsTaskConfig taskConfig) {
-    if (ReactNativeFeatureFlags.enableBridgelessArchitecture()) {
+    if (ReactFeatureFlags.enableBridgelessArchitecture) {
       final ReactHost reactHost = getReactHost();
       reactHost.addReactInstanceEventListener(
           new ReactInstanceEventListener() {