Removes some unnecessary species mentions from kapuparts (#66112)

#65523 made some changes to bodypart names that messed with the grammar of a few messages around the codebase by inserting the species of a bodypart where it's really not needed. For example:

For most general combat/health cases, we don't need to worry about the species of a bodypart. So, this changes combat and wound messages back to simply displaying the relevant bodypart zone being attacked/affected. See below:

dreamseeker_2022-04-10_02-05-55.png

Let me know if I missed any!
Why It's Good For The Game

Better grammar
Changelog

cl Ryll/Shaps
spellcheck: Wound and combat messages will no longer mention the species of an attacked bodypart when not appropriate
/cl

code/modules/surgery/bodyparts/_bodyparts.dm

@@ -39,6 +39,8 @@
 
 	/// BODY_ZONE_CHEST, BODY_ZONE_L_ARM, etc , used for def_zone
 	var/body_zone
+	/// The body zone of this part in english ("chest", "left arm", etc) without the species attached to it
+	var/plaintext_zone
 	var/aux_zone // used for hands
 	var/aux_layer
 	/// bitflag used to check which clothes cover this bodypart

code/modules/surgery/bodyparts/head.dm

@@ -6,6 +6,7 @@
 	max_damage = 200
 	body_zone = BODY_ZONE_HEAD
 	body_part = HEAD
+	plaintext_zone = "head"
 	w_class = WEIGHT_CLASS_BULKY //Quite a hefty load
 	slowdown = 1 //Balancing measure
 	throw_range = 2 //No head bowling

code/modules/surgery/bodyparts/parts.dm

@@ -6,6 +6,7 @@
 	max_damage = 200
 	body_zone = BODY_ZONE_CHEST
 	body_part = CHEST
+	plaintext_zone = "chest"
 	is_dimorphic = TRUE
 	px_x = 0
 	px_y = 0
@@ -71,6 +72,7 @@
 	max_stamina_damage = 50
 	body_zone = BODY_ZONE_L_ARM
 	body_part = ARM_LEFT
+	plaintext_zone = "left arm"
 	aux_zone = BODY_ZONE_PRECISE_L_HAND
 	aux_layer = HANDS_PART_LAYER
 	body_damage_coeff = 0.75
@@ -169,6 +171,7 @@
 	max_damage = 50
 	body_zone = BODY_ZONE_R_ARM
 	body_part = ARM_RIGHT
+	plaintext_zone = "right arm"
 	aux_zone = BODY_ZONE_PRECISE_R_HAND
 	aux_layer = HANDS_PART_LAYER
 	body_damage_coeff = 0.75
@@ -266,6 +269,7 @@
 	max_damage = 50
 	body_zone = BODY_ZONE_L_LEG
 	body_part = LEG_LEFT
+	plaintext_zone = "left leg"
 	body_damage_coeff = 0.75
 	px_x = -2
 	px_y = 12
@@ -356,6 +360,7 @@
 	max_damage = 50
 	body_zone = BODY_ZONE_R_LEG
 	body_part = LEG_RIGHT
+	plaintext_zone = "right leg"
 	body_damage_coeff = 0.75
 	px_x = 2
 	px_y = 12