Xenobiology QOL tweaks (#30062)

* Xenobiology QOL tweaks

* fixes

* Update generic.dm

* name tweak

* Update code/__HELPERS/trait_helpers.dm

Co-authored-by: warriorstar-orion <orion@snowfrost.garden>
Signed-off-by: Kyani <65205627+EmeraldCandy@users.noreply.github.com>

---------

Signed-off-by: Kyani <65205627+EmeraldCandy@users.noreply.github.com>
Co-authored-by: warriorstar-orion <orion@snowfrost.garden>

code/modules/surgery/generic.dm

@@ -12,7 +12,6 @@
 	allowed_tools = list(
 		TOOL_SCALPEL = 100,
 		/obj/item/kitchen/knife = 90,
-		TOOL_DISSECTOR = 75,
 		/obj/item/kitchen/knife/shiv = 70,
 		/obj/item/shard = 60,
 		TOOL_WIRECUTTER = 35,

code/modules/surgery/surgery.dm

@@ -375,6 +375,9 @@
 		surgery.step_in_progress = FALSE
 		return SURGERY_INITIATE_INTERRUPTED
 
+	if(HAS_TRAIT(tool, TRAIT_SURGICAL_CANNOT_FAIL))
+		prob_success = 100 // going to snowflake this in otherwise dissections fail repeatedtly with "proper" tools.
+
 	var/chem_check_result = chem_check(target)
 	var/pain_mod = deal_pain(user, target, target_zone, tool, surgery)
 	prob_success *= pain_mod