Merge "Null-check the desaturating view, it might be gone." into rvc-dev am: b19c92dc am: dc7451d0 am: a293b474

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11708789

Change-Id: Ifb98d3e2311eeb07e650573d244f9f9c154c5ac3