Merge "Add extension sdk finalization into update_prebuilts.py" into tm-dev am: 947ce2425c

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/sdk/+/17656206

Change-Id: I17695204dbd4dd485aa1379f10e1b0c20bdf300e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>