Arguments ordering in Report long tasks for “user agent does not execute this loop”

[triple-underscore]

§8.1.4.2( https://html.spec.whatwg.org/multipage/webappapis.html#event-loop-processing-model )
related to: #4059 by @npm1

Report the duration of time during which the user agent does not execute this loop by performing the following steps:
...
If event loop end is set, then let top-level browsing contexts be the set of all top-level browsing contexts of all Document objects associated with the event loop. Report long tasks, passing in event loop begin, event loop end, "browser", and top-level browsing contexts.

I think the order of "event loop begin", "event loop end" should be swapped,
since this "event loop end", the time previous iteration of the loop has ended, is earlier than "event loop begin"

[npm1]

That's correct, thanks for catching this! Hmm this is a very simple PR but I currently only have access to a Chromebook which means I can't easily create a PR. Feel free to send a PR for this, otherwise I'll fix it in about 2 weeks.