Fixes item quirks giving items on charslot change (#5671)

## About The Pull Request

Title.

Closes https://github.com/Bubberstation/Bubberstation/issues/5632

The exact implementation is a new variable on quirks that qdels the
items they spawn or early returns if its a path.

Family heirloom and medicine allergy are exempt.

## Why It's Good For The Game

bugs bad
## Proof Of Testing
<details>
<summary>Screenshots/Videos</summary>

<img width="1556" height="628" alt="image"
src="https://github.com/user-attachments/assets/0162d509-4dab-48a5-8a78-ded340fad641"
/>

ignore the runtimes thats a tg error

</details>

## Changelog
🆑
fix: Item quirks no longer give items on char slot change
/🆑

modular_zubbers/code/controllers/subsystem/processing/quirks.dm

@@ -4,7 +4,7 @@
 	var/cleanup = TRUE
 
 /// Remove any quirks that the client's prefs do not have, and apply any new ones
-/datum/controller/subsystem/processing/quirks/proc/OverrideQuirks(mob/living/user, client/applied_client)
+/datum/controller/subsystem/processing/quirks/proc/OverrideQuirks(mob/living/user, client/applied_client, spawn_items = TRUE)
 	var/list/required_quirks = applied_client.prefs.all_quirks
 	var/list/present_quirks = list()
 	for(var/datum/quirk/quirk in user.quirks)
@@ -16,5 +16,8 @@
 		var/existing_quirk = present_quirks[quirk_name]
 		var/quirk_type = quirks[quirk_name]
 		var/datum/quirk/quirk = new quirk_type
+		if (!spawn_items)
+			quirk.set_item_giving_paused(TRUE)
 		quirk.add_to_holder(user, existing_quirk, applied_client)
+		quirk.set_item_giving_paused(FALSE)