leaudio: Improve reconfiguration between call and media/game

With this patch, stack will remember local metadata which are used for
the stream before the phonecall starts, and when phoncall will end,
those metadata will be restored - decreasing time for the
reconfiguration.

Bug: 356772046
Bug: 352686917
Test: atest bluetooth_le_audio_client_test
Flag: com.android.bluetooth.flags.leaudio_speed_up_reconfiguration_between_call
Change-Id: Ie993c8099902e605dc9ab0c5cafb438f743654f4