Merge "Fix NPE when invoking Context#isUiContext" into rvc-dev am: 5c25605da0 am: a91c84fa14

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12105622

Change-Id: I394f915b6577d1972b22e61d11af430a220aad06