Merge "In VuklanManager make sure we have a valid semaphore context before...

Merge "In VuklanManager make sure we have a valid semaphore context before destroying it." into sc-dev am: f560a753 am: b3913893 am: 2cbf17b3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15301696

Change-Id: Ia1dd5fc6aa2af9bf7a942642b8fe1167e0323bb5