StagefrightTest: stop running codec after timeout am: c52d5add4d am: f6f09eacae am: 413016db5a am: be486df794

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/18977270

Change-Id: I569bf0c31f4eb3a7022b88451879801b630a0faa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>