Merge "Preserve *.mk files when regenerating crates." into main am: dad3ea7004 am: 9fb5f8594a

Original change: https://android-review.googlesource.com/c/platform/development/+/3255709

Change-Id: Ia76451854394680de6bfb5382d5e02fd7fe54d93
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>