Add --failOnFailedSeed checkbox to URL list workflows

[tw4l]

Fixes #1180

Screenshot of option as presented in UI:

Checkbox does not appear for seeded crawls.

Crawls that fail this way currently show as "Partial Complete", and the fatal message is clearly visible in the Error Logs.

[Shrinks99]

Nice!

[ikreymer]

I think the intention of the --failOnFailedSeed in the crawler is that the whole crawl should interrupt and fail immediately if any of the seeds fail. I see that as having the crawl be marked as failed in Browsertrix Cloud, rather than just doing a graceful stop. The reason to do this is that you need all URLs in the list to succeed, otherwise this is a failure.
The default behavior is to ignore the failed URLs and get as many as possible.

If we also add a failed threshold setting, that could then be use for more fine-grained control, eg. with this setting, and 100 URLs, 99/100 pages crawled would be considered a failure. But, if we a a fail threshold, then that could be set to 5, and 95/100 would be a failure by 99/100 would be success.

[SuaYoo]

Nitpick and happy to move this topic to Discord, but could we move towards sentence case for long checkbox labels? Personally I find the long checkbox labels in title case hard to read, which I do think is validated rather than only personal preference. I also remember seeing that it makes localization/translation more difficult down the road, though I can't find any resources to back that up.

[ikreymer]

With webrecorder/browsertrix-crawler#402, the --failOnFailedSeed should also mark crawl as failed (needs a bit more testing).

[ikreymer]

Tested with latest crawler, works as expected.