gives proper light armor slowdown to goon armor (#6059)

# About the pull request
Gives light_slowdown to the goon armor that spawns on survivors, since
it has BETTER THEN LIGHTARMOR without any slowdown

# Explain why it's good for the game

People are powergaming with survivor armor and i dont like it, also the
goon armor is described as being shady and bad. Doesnt make sense it has
nearly medium stats with no slowdown at all.


# Testing Photographs and Procedure
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<summary>Screenshots & Videos</summary>

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screenshots and the `<details>` tags.

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# Changelog
:cl:
balance: Goon armor properly has slowdown now
/:cl:

---------

Co-authored-by: InsaneRed <[email protected]>
Co-authored-by: Drathek <[email protected]>

code/modules/clothing/suits/marine_armor/ert.dm

@@ -79,13 +79,12 @@
 	item_state = "armor"
 	item_state_slots = null
 	contained_sprite = TRUE
+	slowdown = SLOWDOWN_ARMOR_LIGHT
 
 	flags_armor_protection = BODY_FLAG_CHEST
 	flags_cold_protection = BODY_FLAG_CHEST
 	flags_heat_protection = BODY_FLAG_CHEST
 
-	slowdown = SLOWDOWN_ARMOR_NONE // only protects chest, but enables rapid movement
-
 /obj/item/clothing/suit/storage/marine/veteran/pmc/light/corporate/lead
 	desc = "A basic vest with a Weyland-Yutani badge on the right breast. This variant is worn by low-level guards that have elevated in rank due to 'good conduct in the field', also known as corporate bootlicking."
 	icon_state = "lead_armor"

code/modules/clothing/under/marine_uniform.dm

@@ -896,7 +896,7 @@
 	item_icons = list(
 		WEAR_BODY = 'icons/mob/humans/onmob/uniform_1.dmi',
 	)
-	
+
 /obj/item/clothing/under/marine/reporter/black
 	icon_state = "cc_black"
 	worn_state = "cc_black"