Block invalid Twitter usernames

[JustAnotherArchivist]

Yes, yet another bug in Twitter's search. This time, it involves invalid usernames that look like domains. For example, https://twitter.com/search?q=from:archiveteam.org returns various Tweets containing links to archiveteam.org, which contradicts the search documentation (hidden behind "operators" on search-home). An account with the username archiveteam.org does not exist, so that search should not return any results. In fact, such an account can't exist: Twitter usernames must match [A-Za-z0-9_]{1,15} per Twitter's help page.

Because this unexpectedly produces tweets e.g. on snscrape twitter-user archiveteam.org, snscrape should directly block such invalid usernames.