AirPods Pro 2 Microphone Not Detected on Steam Deck – Any Fixes?

I'm trying to use my AirPods Pro 2 (2nd gen) with my Steam Deck, and while the audio output works fine, the microphone doesn’t appear as an input device in the system settings.

Has anyone managed to get the AirPods Pro 2 microphone working on Steam Deck? If so, did you have to apply any specific tweaks or use third-party tools?

Any help or workaround would be much appreciated!