Should be able to mark comments as spam from front end

[dd32]

As requested in #meta4217

After the block editor was introduced, one can't anymore jump over to the editing panel for a post in order to mark a comment as spam. Instead you have to browse through page after page of approved comments, until you reach the relevant date to flag the comment as spam.

If possible, please add (for users with appropriate caps) a possibility to mark a comment as spam directly in the front-end.