Add a limit on how long you can wait after your ticket is resolved to re-open it

Ticket authors shouldn't be able to re-open their own ticket if it's been a while since it was resolved.

This is because if it's been a while, there's a 99% chance that they want a follow-up question (which should be a new thread), and not because the ticket was resolved prematurely. (This distinction is important for statistics and stuff.)

As a threshold, I'm thinking 3 days? Most people will notice within 3 days that their ticket has been resolved, and if someone's coming back after 4 days, it's probably a new question.

### Examples

- [Ticket re-opened after 4 days](https://hackclub.slack.com/archives/C09MATKQM8C/p1778449463496979?thread_ts=1777658890.733309&cid=C09MATKQM8C)