Suggested edits on deleted posts are not visible in the list of pending edits

[cellio]

meta:292505

If a post is deleted but has a pending suggested edit, which can happen rarely, that suggested edit doesn't show up in the list of pending edits, only on the deleted post itself. For users who can see deleted posts, let's include such entries on the list of pending suggestions, with the pink backgrounds to convey that these posts are currently deleted.

Why wouldn't we just throw out pending edits if a post is deleted? Because maybe user A is trying to help user B salvage a post and we don't want to lose that.

To reproduce:

• User 1 (no abilities beyond Participate Everywhere) creates a post.
• User 2 (no abilities ditto) suggests an edit.
• User 1 deletes the post with the edit still pending.
• User 3 (moderator) views the pending edits, and that one is not there.
• User 1 can't see the list of pending edits but can view the deleted post, which shows the pending edit. (And -- just tested -- can approve the edit, leaving the post deleted as expected.)