Merge "Make MGF1 Digest setter NotNull" into main am: 6fee432f44 am: 8eaf2a2076 am: d2c8f122d3

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

Change-Id: Iadd0c529d68c8d525a1a9a3cb6d4bb375743e908
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>