Reduce visibility of FrescoBasedReactTextInlineImageShadowNode

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.

bypass-github-export-checks

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

Reviewed By: arushikesarwani94

Differential Revision: D49803295

fbshipit-source-id: 9273607af351b85800e37800941039ccf10eef76

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageShadowNode.java

@@ -27,7 +27,7 @@
 import java.util.Locale;
 
 /** Shadow node that represents an inline image. Loading is done using Fresco. */
-public class FrescoBasedReactTextInlineImageShadowNode extends ReactTextInlineImageShadowNode {
+class FrescoBasedReactTextInlineImageShadowNode extends ReactTextInlineImageShadowNode {
 
   private @Nullable Uri mUri;
   private ReadableMap mHeaders;