Gorilla attack cooldown (#79238)

## About The Pull Request

Fix Gorilla attack cooldown. Now the gorillas attack living people at
the same speed as objects

## Why It's Good For The Game

https://github.com/tgstation/tgstation/issues/79092#issue-1950870293

## Changelog

🆑
fix: Fixed gorilla attack cooldown. Now attacking speed to mobs is the
same as attacking speed to objects.
/🆑

---------

Co-authored-by: Hatterhat <31829017+Hatterhat@users.noreply.github.com>

code/modules/mob/living/basic/farm_animals/gorilla/gorilla.dm

@@ -23,6 +23,7 @@
 	response_harm_continuous = "thumps"
 	response_harm_simple = "thump"
 	speed = 0.5
+	melee_attack_cooldown = CLICK_CD_MELEE
 	melee_damage_lower = 15
 	melee_damage_upper = 18
 	damage_coeff = list(BRUTE = 1, BURN = 1.5, TOX = 1.5, CLONE = 0, STAMINA = 0, OXY = 1.5)