Fix other reproduction of invisible keyguard race

Similar to Id20a300edfa52433642747dbcdb1ecceeffadba8, the keyguard
becomes invisible after the keyguard erronously enters a bad state
due to racing unlock and lock requests from the user. This corrects
it for this reproduction by cancelling the inprogress unlock
animation.

Bug: 267711359
Test: Manually tested on device
Change-Id: I6985a667827ac068af8e2eb5756edc30f7545cd9