Merge "Binder: Flattenable is no longer a hard dependency" into main am: f334e5da6d

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2807155

Change-Id: Ied000a46c497ec47a131c54cfa7c25ead54bb9c0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>