Split out stdlib licenses am: 0283769f40

Original change: https://android-review.googlesource.com/c/platform/prebuilts/rust/+/3527266

Change-Id: I1147cc642791a389cedf69dbbf86ce2cd7f32bba
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>