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: 8eb3cebd

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

Change-Id: If34684afe36513937c03f8fa12e736e3f3d71199