fix: restartApp on the main thread

Post the restart to the main thread to ensure the Activity lifecycle completes before we start tearing down the React context. This prevents the new React instance from immediately being paused.

Author: Minishlink

android/app/src/main/java/com/appzung/codepush/react/CodePushNativeModule.java

@@ -686,7 +686,12 @@ public void onHostResume() {
                                         if (installMode == CodePushInstallMode.IMMEDIATE.getValue()
                                                 || durationInBackground >= CodePushNativeModule.this.mMinimumBackgroundDuration) {
                                             CodePushUtils.log("Loading bundle on resume");
-                                            restartAppInternal(false);
+                                            new Handler(Looper.getMainLooper()).post(new Runnable() {
+                                                @Override
+                                                public void run() {
+                                                    restartAppInternal(false);
+                                                }
+                                            });
                                         }
                                     }
                                 }