leaudio: Fix possible race on closing stream

Fix for devices using Configuration Caching.
It could happen that state machine reported state CONFIGURED_AUTONOMOUS
event not all the ASE got into that state

Bug: 312314041
Test: atest bluetooth_le_audio_test
Tag: #feature
Change-Id: Ib13ec1a65311fdcd9797561dfe4a65a8cd52879c