Properly constrain FAB to its normal bounds when tucking

Bug: 343881584
Flag: EXEMPT self-contained bugfix
Test: drag FAB to corner of the screen and release. FAB should move away from the system bars and stay visible.
Change-Id: I5b28214677ae4822d1bbf95d624a8e71a1677149

packages/SystemUI/src/com/android/systemui/accessibility/floatingmenu/MenuAnimationController.java

@@ -311,6 +311,7 @@ class MenuAnimationController {
             constrainPositionAndUpdate(
                     new PointF(mMenuView.getTranslationX(), mMenuView.getTranslationY()),
                     /* writeToPosition = */ true);
+            mMenuView.onPositionChanged(true);
             moveToEdgeAndHide();
             return true;
         }