Winter coat sleeve and palette tweak (#21042)

Fixes a bit of an inconsistency I did in
https://github.com/Aurorastation/Aurora.3/pull/20755 with winter coat
sleeves. The north facing version had slightly _thicker_ sleeves, so it
looked weird/inconsistent. PR fixes that and also colorable winter coats
use the new standardized colorable palette.

Preview in details below:
(all variants have been tweaked though not shown)

<details>
Old:

<img width="1017" height="504" alt="image"
src="https://github.com/user-attachments/assets/fc388225-c308-4d98-9239-569da6081728"
/>

New: 

<img width="1021" height="502" alt="image"
src="https://github.com/user-attachments/assets/4f883fa9-9cbd-4d91-8f0e-7896adcc51b8"
/>

Difference marked in Zavodskoi Interstestellar red™:

<img width="1012" height="501" alt="image"
src="https://github.com/user-attachments/assets/0f1c1c90-3671-4d2b-852e-7f80d6bd70a9"
/>

</details>

code/modules/clothing/suits/hoodies.dm

@@ -38,7 +38,7 @@
 /obj/item/clothing/suit/storage/hooded/wintercoat
 	name = "winter coat"
 	desc = "A heavy jacket made from animal furs."
-	icon = 'icons/obj/clothing/hoodies.dmi'
+	icon = 'icons/obj/item/clothing/suit/storage/toggle/hoodies.dmi'
 	icon_state = "coatwinter"
 	item_state = "coatwinter"
 	contained_sprite = TRUE
@@ -54,7 +54,7 @@
 /obj/item/clothing/head/winterhood
 	name = "winter hood"
 	desc = "A hood attached to a heavy winter jacket."
-	icon = 'icons/obj/clothing/hoodies.dmi'
+	icon = 'icons/obj/item/clothing/suit/storage/toggle/hoodies.dmi'
 	icon_state = "coatwinter_hood"
 	contained_sprite = TRUE
 	body_parts_covered = HEAD