Merge "Demote Lint FlaggedApi violations to warnings" into main am: bafef27212

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3145060

Change-Id: Idd26e97ecd4ad93e0d6371fbbd8be4034605441f
Signed-off-by: Automerger Merge Worker <[email protected]>