Merge "IsoManager: Unify protection against usage when not started" into main...

Merge "IsoManager: Unify protection against usage when not started" into main am: 7b32d982 am: e7279e4c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3231167



Change-Id: If3ba1d2f483508cfd2b2a1a670b44aa577203913
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>