LeAudio: Fix switching to not active le audio device

With this patch, we make sure that during the call, if Le Audio device
is set to Active Device, it will be also set as communication device in
the AudioManager.

Bug: 220267390
Bug: 159786353
sponsor: @jpawlowski
test: atest TelecomUnitTest
Change-Id: I688ce7a9d6bbebbb513fea7d76d3d9d346db08f1