Merge "aconfig Rust: Support huge list of flags" into main am: d713353a

Original change: https://android-review.googlesource.com/c/platform/build/+/3247857



Change-Id: I679d7a46f43f3b00cd7792744a3552bd6a65ce8e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>