Non-Intrusive refactor of play_queued_audio_system()

[matiqo15]

Objective

• Improve readability.
• Somewhat relates to Enable Clippy nesting limit #10896.

Solution

• Use early returns to minimize nesting.
• Change emitter_translation to use if let instead of map.

[Nilirad]

LGTM.

Good job in bringing it down to 4 levels (IIRC Clippy doesn't count match arm blocks as blocks). Personally, I would've extracted at least one function, since the function is quite long, and I found an else block like 70 lines after the if started, but we're already at a much better position than main. Also, congratulations on transforming emitter_translation, I wouldn't have ever been able to come up with a similar solution 😃