LeAudio/CodecExtensibility: Use proper data path

When converting the data path from AIDL for the offloader
(transparent data path mode), we should properly align
the stacl format for coding to `transparent`.

Bug: 308428644
Bug: 313054645
Test: atest bluetooth-test-audio-hal-le-audio-software bluetooth-test-audio-hal-aidl-leaudio-utils bluetooth_le_audio_test bluetooth_le_audio_client_test bluetooth_test_broadcaster bluetooth_test_broadcaster_state_machine bluetooth_le_audio_codec_manager_test
Change-Id: I6224e64904e6267afd26beaee414f4e8ec2ae25f