codec2 vts: Fix handling of codec config flag in decoders am: 3b693092

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/24680952



Change-Id: Idcc2a0703ebef24e8572b1b5dd86584d26ea6994
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>