Reduce visibility of LogBoxDialogSurfaceDelegate

Summary:
In an attempt to reduce footprint of React Native Android public APIs we are reducing visibility of classes and interfaces that are not meant to be used publicly OR are public but have no usages.
As part of our analysis, which involved looking for usages inside the Meta codebase and code search in OSS, we've detected that this class/interface is public but it's not used from other packages.

If you are using this class or interface please comment in this PR and we will restate the public access.

changelog: [Android][Changed] Reducing visibility of LogBoxDialogSurfaceDelegate

bypass-github-export-checks

Reviewed By: arushikesarwani94

Differential Revision: D49803282

fbshipit-source-id: 51594dc7d2eda47f4673874cf83d77a1a6d8007b

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

@@ -20,7 +20,7 @@
  * The implementation of SurfaceDelegate with {@link Activity}. This is the default SurfaceDelegate
  * for Mobile.
  */
-public class LogBoxDialogSurfaceDelegate implements SurfaceDelegate {
+class LogBoxDialogSurfaceDelegate implements SurfaceDelegate {
 
   private @Nullable View mReactRootView;
   private @Nullable LogBoxDialog mDialog;