le_audio: Deactivate ASEs when re-configuring from configured group

ASEs needs to be deactivated when re-configuring to another context.
Leaving active ASEs leads to re-configuration of needed ASEs but also
leaves possibly not needed for streaming context ASEs in active state.
This implies in bad behaviour while progressing through state machine,
which relies on active ASEs.

Tag: #feature
Bug: 269057925
Test: atest StateMachineTest#StreamStartWithDifferentContextFromConfiguredState
Change-Id: I1f3d9b086955e50b925388748053c946339720b6