You can use laser designator in mortar camera view

### Testmerges

N/A

### Description of the bug

You can use laser designator in mortar camera view and give CAS target in place where you send camera shell or you can use green laser to scan next coords for yourself or OB. I think also this work with other camera systems

### What's the difference with what should have happened?

This shouldn't be available.

### How do we reproduce this bug?

1.Setup mortar
2.Fire camera shell on coords
3.Open mortar camera view
4.Next use laser designator in hand and use it to mark area from mortar camera view

### Issue Bingo

- [X] Issue could be reproduced at least once
- [X] Issue happened in a recent (less than 7 days ago) round
- [X] Couldn't find an existing issue about this (https://github.com/cmss13-devs/cmss13/issues)