If we are ticket delete from admin side after checked on customer side here ticket is open

[komal-sh-27]

Description
If we are ticket delete from admin side after checked on customer side here ticket is open

How to reproduce
Step 1: Go to the admin side and the ticket deletes from the outer ticket listing or ticket view side:

Step 2: Now Go to the customer side and deleted the ticket here shown (if the ticket is already open on the customer side) but in the ticket listing not showing on the customer side:

For reference check this video:
https://www.awesomescreenshot.com/video/10969648?key=996f5b5c21d6165a9c0aca9c860102fd

If the deleted ticket is open when the ticket number is removed from the ticket list but the ticket open does not show a 404 page not found.

Possible Solution
If we are ticket delete from admin side after checked on customer side here ticket is open so here ticket open should be shown a 404 page not found: