consider issue triaged if there is a PR already filed for it

[yarikoptic]

example dandi/dandi-cli#1254 fixes dandi/dandi-cli#1253 which had no comments, so was listed as not triaged, but it was since someone acted upon it.

@jwodder mentioned that most likely REST api doesn't provide information about that PR closes issues, so we do not have direct way for that ATM (besides adding graphql query).