Adding support for listening to end callbacks when launching an intent from Launcher

Also moving various state handling to these end callbacks enstead of relying on resume

Bug: 265134143
Test: Verified that the end callback is received
Change-Id: I326a99c80154d244c0e49f678717c476602b6240

src/com/android/launcher3/BaseDraggingActivity.java

@@ -155,6 +155,13 @@ public abstract class BaseDraggingActivity extends BaseActivity
         return wrapper;
     }
 
+    @Override
+    public ActivityOptionsWrapper makeDefaultActivityOptions(int splashScreenStyle) {
+        ActivityOptionsWrapper wrapper = super.makeDefaultActivityOptions(splashScreenStyle);
+        addOnResumeCallback(wrapper.onEndCallback::executeAllAndDestroy);
+        return wrapper;
+    }
+
     @Override
     protected void onStart() {
         super.onStart();