Update TEST_MAPPING am: 9e626871af

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/cfg-if/+/2399196

Change-Id: If9789a91c327fd6a79c2439127007b1aeff286de
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>