Adds radiation and welding protection to elder atmos armor. (#6067)

## About The Pull Request

Title.

## Why It's Good For The Game

This is how it was intended to function, since the prerequisite helmet
had welding protection but this doesn't for some reason and also it
doesn't protect against radiation even though you're near the most
radioactive things in the game so I fixed that.

## Proof Of Testing

<img width="471" height="45" alt="image"
src="https://github.com/user-attachments/assets/752f90a6-16fd-40d4-94d1-f531ecf7b308"
/>
<img width="510" height="411" alt="Screenshot 2026-08-06 163545"
src="https://github.com/user-attachments/assets/e3b62d2b-b426-4cc1-bf6a-75a6a3cfc739"
/>
<img width="461" height="415" alt="Screenshot 2026-08-06 163631"
src="https://github.com/user-attachments/assets/3eb6c64e-8bd4-45af-a9ee-5d59171639ee"
/>


## Changelog
<!-- If your PR modifies aspects of the game that can be concretely
observed by players or admins you should add a changelog. If your change
does NOT meet this description, remove this section. Be sure to properly
mark your PRs to prevent unnecessary GBP loss. You can read up on GBP
and its effects on PRs in the tgstation guides for contributors. Please
note that maintainers freely reserve the right to remove and add tags
should they deem it appropriate. You can attempt to finagle the system
all you want, but it's best to shoot for clear communication right off
the bat. -->

🆑
add: Adds welding and radiation protection to the elder atmosian armor.
/🆑

<!-- Both 🆑's are required for the changelog to work! You can put
your name to the right of the first 🆑 if you want to overwrite your
GitHub username as author ingame. -->
<!-- You can use multiple of the same prefix (they're only used for the
icon ingame) and delete the unneeded ones. Despite some of the tags,
changelogs should generally represent how a player might be affected by
the changes rather than a summary of the PR's contents. -->

<!-- By opening a pull request. You have read and understood the
repository rules located on the main README.md on this project. -->

Co-authored-by: Cabbage <supredoode@gmail.com>

modular_zubbers/code/modules/clothing/head/helmet.dm

@@ -682,9 +682,14 @@
 	max_heat_protection_temperature = FIRE_IMMUNITY_MAX_TEMP_PROTECT
 	min_cold_protection_temperature = FIRE_HELM_MIN_TEMP_PROTECT
 	resistance_flags = FIRE_PROOF
+	flash_protect = FLASH_PROTECTION_WELDER
 	flags_inv = HIDEFACE | HIDEFACIALHAIR | HIDEHAIR | HIDEMASK | HIDEEYES | HIDEEARS
 	custom_materials = list(/datum/material/metalhydrogen = SHEET_MATERIAL_AMOUNT * 3)
 
+/obj/item/clothing/head/helmet/elder_atmosian/Initialize(mapload)
+	. = ..()
+	AddElement(/datum/element/radiation_protected_clothing)
+
 /datum/armor/helmet_elder_atmosian
 	melee = 40
 	bullet = 30

modular_zubbers/code/modules/clothing/suits/armor.dm

@@ -99,6 +99,7 @@
 	allowed += list(
 		/obj/item/fireaxe/metal_h2_axe,
 	)
+	AddElement(/datum/element/radiation_protected_clothing)
 
 /datum/armor/armor_elder_atmosian
 	melee = 40