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

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

Change-Id: I05676cb0b6e4bce75a6c71cbac271ee18314648d