Merge "Add TimeZoneProviderStatus' nullness check." into main am: 1cfea912a5 am: 2a81c10aff

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3182222

Change-Id: Ib01d5fd67d7623c9e50673ff2330521682262621
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>