leaudio: Notify AF about configuration change on codec and freq change

When AF is notified about codec change it pauses a music for a sec.
With this change, AF will be notified about new configuration if
codec or sampling rate did change.

Also Bluetooth sends update to upper layer when reconfiguration is
scheduled or stream is starting. Previously it was done after stream was
started.

Bug: 333993332
Bug: 326442537
Test: mmm packages/modules/Bluetooth
Test: manual test make a voip while streaming and drop the call
Flag: com.android.bluetooth.flags.leaudio_codec_config_callback_order_fix
Change-Id: I47a3610824bd85b73594bd62cfee86c708ed85e1