LeAudio: Fix invalid audio set config parameters

Octets Per Codec Frame parameter was invalid for certain configurations.

Bug: 295972694
Test: atest --host bluetooth_le_audio_test bluetooth_le_audio_client_test  bluetooth_test_broadcaster bluetooth_test_broadcaster_state_machine bluetooth_le_audio_codec_manager_test
Flag: EXEMPT; non-flagable refactor, verified with unit tests
Change-Id: I67168805b765c1bbe2c804b7cd0fcbd7958289fb