Do not add jank monitor for stash state change when the drag layer is not attached to the window

An alternative here is to use the root layer when NO_RECREATE flag is on. However, we do not have a reference to it here (shall we consider passing it in?)

Fixes: 325096498
Test: Need to verify
Change-Id: I1709bc88753a90547f7a61dc6e24cdaf489d19e0