2022-June-18 - Prerelease - 2.6.943

ClipPlayer refactoring (#10705)

* Start breaking up ClipPlayer

* Wire ClipPlayers where necessary

* Clean up ClipPlayer usage

* Simplify constructor

* Simplify code and ensure thread safety

* Move DefaultSoundChannel to game-headed

* Use simpler name

* Split comment differently

* Fix test case

* Use side-effects for consistency

* Print error instead of warning if ui is not set