Update task top activity after applying launch flags

- When recycling a task complyActivityFlags() may clear the task and
  finish the task top activity, in this case we should act on the
  subsequent task top activity

Bug: 179905395
Test: atest NexusLauncherTests:TaplTestsNexus#testOverviewActions
      on a CF instance
Change-Id: Ic5db82b82ffe13641519c3cea032c6e46ef1423c

services/core/java/com/android/server/wm/ActivityStarter.java

@@ -1989,6 +1989,13 @@ class ActivityStarter {
             return START_SUCCESS;
         }
 
+        // The reusedActivity could be finishing, for example of starting an activity with
+        // FLAG_ACTIVITY_CLEAR_TOP flag. In that case, use the top running activity in the
+        // task instead.
+        targetTaskTop = targetTaskTop.finishing
+                ? targetTask.getTopNonFinishingActivity()
+                : targetTaskTop;
+
         // At this point we are certain we want the task moved to the front. If we need to dismiss
         // any other always-on-top root tasks, now is the time to do it.
         if (targetTaskTop.canTurnScreenOn() && mService.mInternal.isDreaming()) {
@@ -2006,11 +2013,8 @@ class ActivityStarter {
         // We didn't do anything...  but it was needed (a.k.a., client don't use that intent!)
         // And for paranoia, make sure we have correctly resumed the top activity.
         resumeTargetRootTaskIfNeeded();
-        // The reusedActivity could be finishing, for example of starting an activity with
-        // FLAG_ACTIVITY_CLEAR_TOP flag. In that case, return the top running activity in the
-        // task instead.
-        mLastStartActivityRecord =
-                targetTaskTop.finishing ? targetTask.getTopNonFinishingActivity() : targetTaskTop;
+      
+        mLastStartActivityRecord = targetTaskTop;
         return mMovedToFront ? START_TASK_TO_FRONT : START_DELIVERED_TO_TOP;
     }