Fixes fake incomplete surgery (#4552)

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# About the pull request

This PR closes #4548

We need two of these checks in both the initial checks and then after an
input before we even start the surgery so we don't have a hanging
pretend surgery.

# Explain why it's good for the game

Bug bad


# Testing Photographs and Procedure
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# Changelog

:cl: Morrow
fix: Fixed fake incomplete surgeries
/:cl:

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code/modules/surgery/surgery_initiator.dm

@@ -27,6 +27,13 @@
 				to_chat(user, SPAN_WARNING("You can't perform surgery under these bad conditions!"))
 			return FALSE
 
+	var/obj/limb/surgery_limb = target.get_limb(target_zone)
+	if(surgery_limb)
+		var/obj/item/blocker = target.get_sharp_obj_blocker(surgery_limb)
+		if(blocker)
+			to_chat(user, SPAN_WARNING("[blocker] [target] is wearing restricts your access to the surgical site, take it off!"))
+			return
+
 	if(user.action_busy) //already doing an action
 		return FALSE
 
@@ -130,6 +137,12 @@
 		if(surgeryinstance.lying_required && !target.lying)
 			return TRUE
 
+		if(surgery_limb)
+			var/obj/item/blocker = target.get_sharp_obj_blocker(surgery_limb)
+			if(blocker)
+				to_chat(user, SPAN_WARNING("[blocker] [target] is wearing restricts your access to the surgical site, take it off!"))
+				return
+
 		if(affecting)
 			if(surgeryinstance.requires_bodypart)
 				if(affecting.status & LIMB_DESTROYED)