Use Prioritized Task Scheduling API instead of setInterval() once it's more complete

[OlliV]

Currently it's only possible to schedule one-shot tasks comfortably. scheduler.wait() will change this because it would be possible to create an actual co-op thread -like thing that can run with more accurate timing and using a nicer API. This avoids the quirks of setTimeout() and presumably setInterval().

• https://nolanlawson.com/2025/08/31/why-do-browsers-throttle-javascript-timers/
• https://developer.mozilla.org/en-US/docs/Web/API/Prioritized_Task_Scheduling_API
• https://github.com/WICG/scheduling-apis