feat(replay): Use unwrapped setTimeout to avoid e.g. angular change detection
#11864
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This moves some code around in `browser-utils` so we can-reuse the logic for getting the unwrapped fetch implementation to also get the unwrapped `setTimeout` implementation. E.g. Angular wraps this for change detection, which can lead to performance degration.
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This PR makes sure we use the native, unwrapped
setTimeoutimplementation of the browser. Some environments, e.g. Angular, monkey patch this for their change detection, leading to performance issues (possibly). We have already changed this in rrweb, but we also have some usage of this in replay itself.This PR should work fine, however all test fail today because we heavily use
jest.useFakeTimers(), which basically monkey patches fetch too. So with this change, we do not use the patched timers, leading to everything blowing up 馃く