leaudio: Improve handling recording while media stream

We are doing 2 things in this patch
1. We allow to decide if Android should send multiple contexts types in
   the Metadata for the enable command.
   It could happen if e.g. media and recorder are enabled.
   To enable it please set persist.bluetooth.leaudio.allow.multiple.contexts
   which by default is false.
2. Fixing Media and Recording scenario - make sure that there is no
   reconfiguration to Media when Recording is enabled

Bug: 241746141
Test: atest BluetoothInstrumentationTests
Tag: #feature
Change-Id: I75c98bebfc270a40801efa8cea1788f30fe728e2