Merge "Make MGF1 Digest setter NotNull" into main am: 6fee432f44 am: f26151a937 am: 6243dcbbdb

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2832673

Change-Id: I3fb733152de585a38a5b043464bb1f818c734af2
Signed-off-by: Automerger Merge Worker <[email protected]>