Merge "check-flagged-apis: create list of @FlaggedApi errors" into main am: fde34c3b

Original change: https://android-review.googlesource.com/c/platform/build/+/3042361



Change-Id: Ic5c7957c599580627e483ed829763f8796f9e58c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>