Merge "Fix NPE when invoking Context#isUiContext" into rvc-dev am: 5c25605d am: a91c84fa am: f03568fe

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

Change-Id: I87adf1b67dcc50be69e12fa2a74d442f4dbe5613