[ServiceWorker] setTimeout/setInterval are unreliable in ServiceWorkers (#838)

ServiceWorkers are specifically designed to be short-lived. So setTimeout/setInterval don't work reliably. Instead of having a feature in the platform that will lead to authors writing buggy code, we should just not support them inside ServiceWorkers. These two APIs should be moved to DedicatedWorkerGlobalScope and SharedWorkerGlobalScope instead where they run reliably.

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Reply to this email directly or view it on GitHub:
https://github.com/slightlyoff/ServiceWorker/issues/838