Internalize Continuation (#47540)

Summary:
Pull Request resolved: #47540

Continuation is only used inside RN, we should make it internal

changelog: [Android][Changed] Reduce visibility of Continuation to internal, although this interface wasn't being exposed in any public API

Reviewed By: javache

Differential Revision: D65738329

fbshipit-source-id: 6fb1b9e9a253eafad0f6eb1e4c1363d6254846da

packages/react-native/ReactAndroid/api/ReactAndroid.api

@@ -3862,10 +3862,6 @@ public final class com/facebook/react/runtime/hermes/HermesInstance : com/facebo
 public final class com/facebook/react/runtime/hermes/HermesInstance$Companion {
 }
 
-public abstract interface class com/facebook/react/runtime/internal/bolts/Continuation {
-	public abstract fun then (Lcom/facebook/react/runtime/internal/bolts/Task;)Ljava/lang/Object;
-}
-
 public class com/facebook/react/runtime/internal/bolts/Task : com/facebook/react/interfaces/TaskInterface {
 	public static final field IMMEDIATE_EXECUTOR Ljava/util/concurrent/Executor;
 	public static final field UI_THREAD_EXECUTOR Ljava/util/concurrent/Executor;

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/internal/bolts/Continuation.kt

@@ -15,6 +15,6 @@ package com.facebook.react.runtime.internal.bolts
  *
  * @see Task
  */
-public interface Continuation<TTaskResult, TContinuationResult> {
-  @Throws(Exception::class) public fun then(task: Task<TTaskResult>): TContinuationResult?
+internal interface Continuation<TTaskResult, TContinuationResult> {
+  @Throws(Exception::class) fun then(task: Task<TTaskResult>): TContinuationResult?
 }