Fix CI by adding explicit visibility modifier to BridgelessCatalystInstance (#43296)

Summary:
Pull Request resolved: #43296

Fix CI by adding explicit visibility modifier to the newly added `BridgelessCatalystInstance` class. In Kotlin, in explicit API mode, which is usually the default mode for Kotlin, we must explicitly specify one of the modifiers for every declaration to make it clear and explicit.

Changelog:
[Internal] internal

Reviewed By: makovkastar

Differential Revision: D54442485

fbshipit-source-id: 4409ff810a09cc4fadcd2ccf21f7fbac3015f413

Author: arushikesarwani94

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

@@ -32,7 +32,7 @@ import com.facebook.react.turbomodule.core.interfaces.NativeMethodCallInvokerHol
 
 @DoNotStrip
 @DeprecatedInNewArchitecture
-class BridgelessCatalystInstance : CatalystInstance {
+public class BridgelessCatalystInstance : CatalystInstance {
   override fun handleMemoryPressure(level: Int) {
     throw UnsupportedOperationException("Unimplemented method 'handleMemoryPressure'")
   }