Merge "Create `api_for_backported_fixes` flag." into main am: 5f4f9302ca

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3402985

Change-Id: Ib4a87e7abbc33cd6ad605c06e48786e9a41323b5
Signed-off-by: Automerger Merge Worker <[email protected]>