record-finalized-flags: pass in list of finalized flags

record-finalized-flags needs the list of already finalized flags (soong
module "finalized-flags") to correctly generate the full list of
finalized flags for the next API finalization.

Bug: 377676163
Test: m sdk dist # and manually inspect out/dist/finalized-flags.txt
Merged-In: Ie1d52b90f3acad134e4a5e71c112b9724888e25f
Change-Id: Ie1d52b90f3acad134e4a5e71c112b9724888e25f