Delete ReactNativeNewArchitectureFeatureFlags.enableBridgelessArchitecture wrapper method (#57001)

Summary:

Final cleanup in the stack. All Android call sites of the wrapper have moved to the bridgeless-only path in the earlier diffs of this stack, so the wrapper method is unused and can be deleted. The surrounding `ReactNativeNewArchitectureFeatureFlags` object stays — `useFabricInterop()` and `useTurboModuleInterop()` still live there.

Also:
- Drop the `"enableBridgelessArchitecture"` entry from `UseReactNativeNewArchitectureFeatureFlagDetector` — the wrapper for that flag no longer exists, so the lint rule is moot for it.
- Update the detector's tests to exercise `useFabricInterop` (still tracked by the detector) instead of `enableBridgelessArchitecture`.

The underlying generated `ReactNativeFeatureFlags.enableBridgelessArchitecture()` is untouched. `ReactAndroid.api` is unchanged because the wrapper lives in an `internal` package which is excluded from public API tracking.

Changelog: [Internal]

Differential Revision: D106719841

Author: mdvacca

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

@@ -23,18 +23,6 @@ import com.facebook.react.common.build.ReactBuildConfig
 @SuppressLint("UseReactNativeNewArchitectureFeatureFlagDetector")
 public object ReactNativeNewArchitectureFeatureFlags {
 
-  @JvmStatic
-  public fun enableBridgelessArchitecture(): Boolean {
-    if (ReactBuildConfig.UNSTABLE_ENABLE_MINIFY_LEGACY_ARCHITECTURE) {
-      Assertions.assertCondition(
-          ReactNativeFeatureFlags.enableBridgelessArchitecture(),
-          "ReactNativeFeatureFlags.enableBridgelessArchitecture() should be set to TRUE when Strict Mode is enabled",
-      )
-      return true
-    }
-    return ReactNativeFeatureFlags.enableBridgelessArchitecture()
-  }
-
   @JvmStatic
   public fun useFabricInterop(): Boolean {
     if (ReactBuildConfig.UNSTABLE_ENABLE_MINIFY_LEGACY_ARCHITECTURE) {