Review queue: link "helpful flags" to new "Flagged by" filter

[tobiaseigen]

@Moin

There is also a Documentation topic about them: Understanding “helpful flags” on user profiles

It would be great if “helpful flags” would link to the review queue filtered by all the posts the user flagged.

Now that we have FEATURE: add support for "Flagged By" filter in reviewable by SamSaffron · Pull Request #30197 · discourse/discourse · GitHub let’s also add a link to the filter from user profile pages, only accessible by moderators and admins. We already link to “flagged posts” so making “helpful flags” a link would be make sense.