fix: properly fallback in case of error/rejection of one Toot-ID getting method

[rugk]

To implement such a fallback mechanism the extension races two promises against each other here, which have these two methods implemented:

mastodon-simplified-federation/src/background/modules/Detect/Mastodon.js

Line 164 in e340502

return Promise.race([getFromApiQuery, scrapFromHtml]);

Promise.race just has the issue that it also rejects as soon as a promise rejects, i.e. errors.
That's actually not what we want. That works, as long as the success comes before the error, but if the error is instant (which is nearly always the case here because the JSON API is faster than website scraping), then it fails.

We want to ignore errors. I.e. I found something like this SO questions asks for, which points to the modern browser-implemented solution called Promise.any.

Also needs bumping the Firefox version, but that is not a problem, as that version is really old enough to not be supported anymore. :D

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Also implemented a timeout for the API request, so it cannot be stale and hang around forever, which may be bad, too. (At some point we want to show the user an error, after all.)

Fixes #71

[rugk]

@viviicat Feel free to try out the development version and report back whether it/everything works/you like it or what may still be adjusted. And/Or review the code if needed.

Otherwise I'd merge that soon. 🙂

Of course I tested it by myself, and for me it worked with your toot URL.