new comment indicator shows after I leave a new comment

[huumn]

I thought we previously had an issue for this, but maybe not. Regardless, this is still an issue. I think useItemSubmit forgot to update the time.

[Soxasora]

I was commenting around SN to test this, it seems that it happens only in prod.
I followed cache updating via Apollo devtools and lastCommentAt gets updated correctly when I create a new comment

[huumn]

Ah this is happens only for non-custodial comments afaict, because lastCommentAt is set to now() in onPaid which runs asynchronously in another tx after the item is created in perform.

The solution would probably be to set lastCommentAt = GREATEST(lastCommentAt, comment.created_at).