John Willard 6e17e9b62b Removes 'thrownby' var on items (#90877) ...

## About The Pull Request

Fully removes thrownby as a var on items, and is now instead handled by
throwingdatums' ``get_thrower()`` proc

Also replaces the early return for throwing things at yourself (it now
only prevents the call for check_block and therefore hit reaction
stuff), since the only way to throw things at yourself is with
boomerangs, which currently only works because it doesn't pass you as
the thrower for boomerang's return

Speaking of, boomerangs now see the thrower as thrower on returns

Before (Boomerangs don't pass you as the thrower, so it shows you as
being hit by nothing):

![image](https://github.com/user-attachments/assets/44c17c02-5618-44c6-b821-2089752946c8)

After (Boomerangs pass you and you can affect yourself, so it sees you
hitting yourself & it still batons you):

![image](https://github.com/user-attachments/assets/dafe6212-cf58-4a9d-aae1-3ef97faa5dbd)

This is gonna be used for
https://github.com/tgstation/tgstation/pull/90689 as well.

## Why It's Good For The Game

Better logging for boomeranged items, removes a deprecated var and
better consistency for thrown items leaving better readability.

## Changelog
🆑
admin: People throwing boomeranged items and hitting themselves now logs
it as them hitting themselves (rather than being hit by the air).
/🆑

2025-05-08 18:41:30 -04:00

..

fields

Removes 'thrownby' var on items (#90877)

2025-05-08 18:41:30 -04:00

field.dm

…

proximity_monitor.dm

…