Since the Le Audio HW offloader enable/disable control flag
controls Unicast and Broadcast at the same time, we need them
both to work either with HW or SW audio coding paths.
This patch enables software encoding audio path on unicast.
This is the only way to make unicast and broadcast to interact,
since the HW offloader for Braodcast is not yet ready.
Bug: 238997591
Fixes: 238997591
Tag: #feature
Test: atest BluetoothInstrumentationTests
Change-Id: I04fc1306eb15ea2ae102f65b59c1b1cca2070dd1