Include FlaggedApi.bp in main

This CL cherry-pick ag/26004993 to aosp-main-future.
After this CL, aosp/2927450 can be merged.

Test: TH
Bug: 321624552
Ignore-AOSP-First: Merged in aosp/2927450
Change-Id: Iecb6f4d0a6e5e036299783b49108df3a88c5493e
Merged-In: Iecb6f4d0a6e5e036299783b49108df3a88c5493e
1 file changed