Merge "Filter REL out of preview codenames." into main am: 6a6e7731

Original change: https://android-review.googlesource.com/c/platform/build/+/2775701



Change-Id: I9dc3d74d55866255a2afca94b5e87c8f6cd64460
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>