Move recents dependency destruction to onDestroy from onDetachedWindow

With Overview running in a window, this clearing up needs to move later in the  lifecycle.

Bug: 388232647
Test: ran locally on device
Flag: EXEMPT bugfix
Change-Id: Id35c7fce390c2874b453c8b14c4eb0e7220ccd94

quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java

@@ -564,6 +564,11 @@ public class QuickstepLauncher extends Launcher implements RecentsViewContainer,
             mSplitSelectStateController.onDestroy();
         }
 
+        RecentsView recentsView = getOverviewPanel();
+        if (recentsView != null) {
+            recentsView.destroy();
+        }
+
         super.onDestroy();
         mHotseatPredictionController.destroy();
         mSplitWithKeyboardShortcutController.onDestroy();