Throw if getCatalystInstance() is executed when running on bridgless mode + legacy arch minification (#51112)

Summary:
Pull Request resolved: #51112

Throw if getCatalystInstance() is executed when running on bridgless mode + legacy arch minification

This should be safe given that all the methods of BridgelessCatalystInstance throw exceptions

changelog: [internal] internal

Reviewed By: alanleedev

Differential Revision: D74200099

fbshipit-source-id: a888061250f19348a22895c3684aa2333280c916

Author: mdvacca

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/BridgelessReactContext.kt

@@ -24,6 +24,7 @@ import com.facebook.react.bridge.UIManager
 import com.facebook.react.bridge.WritableNativeArray
 import com.facebook.react.common.annotations.FrameworkAPI
 import com.facebook.react.common.annotations.UnstableReactNativeAPI
+import com.facebook.react.common.build.ReactBuildConfig
 import com.facebook.react.devsupport.interfaces.DevSupportManager
 import com.facebook.react.internal.featureflags.ReactNativeNewArchitectureFeatureFlags
 import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler
@@ -63,6 +64,10 @@ internal class BridgelessReactContext(context: Context, private val reactHost: R
   override fun getFabricUIManager(): UIManager? = reactHost.uiManager
 
   override fun getCatalystInstance(): CatalystInstance {
+    if (ReactBuildConfig.UNSTABLE_ENABLE_MINIFY_LEGACY_ARCHITECTURE) {
+      throw UnsupportedOperationException(
+          "CatalystInstance is not supported when Bridgeless mode is enabled.")
+    }
     Log.w(
         TAG,
         "[WARNING] Bridgeless doesn't support CatalystInstance. Accessing an API that's not part of" +