le_audio: Allow to set up other than MEDIA as default context am: db312874 am: ee488a68

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2134461



Change-Id: I9ad8f43da1a1a3a003c6c110cfd53682e58ecbe7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>