Show assignee avatar on feedback posts in the moderation queue

Description: Add a small profile picture (avatar) of the assigned PM directly on each feedback post in the moderation queue, once that PM has been assigned to the post. If showing this in the list view of the Moderation queue isn't feasible, display the assignee info on the individual post page itself (as currently shown in the "Assignee" field in the screenshot example attached). Problem: With various PMs moderating feedback at once, there's currently no way to see at a glance who's already working on a given post. The assignee is only visible after opening the post — a page change plus 2 clicks, which slows down moderation and makes it easy to accidentally duplicate work on the same post. Benefit: An instant visual overview of who's assigned to what would let the team avoid overlapping work and speed up the moderation workflow significantly, without needing to open each post individually.