leaudio: Fix start stream after reconfiguration

When group is in Configured state, ASE can be either activated (if
reconfiguration was in process) or inactivated if remote gets into
Configured state autonomusly after stream is stopped.
This should be taken into account when starting stream for the
configured group.

Bug: 250460929
Test: atest BluetoothInstrumentationTests
Test: atest --host bluetooth_le_audio_test
Tag: #feature
Change-Id: I65e7aa6ae71e06378d70b6883e94886329fd2a32