Comment Offset in Post Edit Screen

[ronalfy]

If you have several comments (say, roughly 24), and you are on the posts edit screen, you may trash and spam comments.

If you trash/spam several comments, and click on the Show More Comments link, the offset is off.

This either results in earlier comments being shown, skipping comments that should be shown, or assuming there are no comments left to show at all.

I will post a video of the bug when I have more time to tackle this.

[utkarshpatel]

Added load function to pass current visible TR in js and load more comment will now call load function instead of get function directly.

[wonderboymusic]

In 34069:

When clicking "Show More Comments" in the Comments meta box on the Edit Post screen, change the click behavior to call a new class method on commentsBox, ->load(), that resets st (cool name) to the number of visible <tr>s before calling ->get(). This will account for spam'd and trash'd comments when returning comments at the proper offset.

Props utkarshpatel.
Fixes #33829.