Fixed VV DNA infusion tool (#86931)

## About The Pull Request

Insert() does not return anything, replace_into relied on that so the
tool ended up just cutting out all the organs it was supposed to insert
after putting them in

## Changelog
🆑
admin: Fixed VV DNA infusion tool
/🆑

code/modules/admin/verbs/grant_dna_infusion.dm

@@ -19,7 +19,7 @@
 
 	// This is necessary because list propererties are not defined until initialization
 	picked_infusion = infusions[picked_infusion]
-	picked_infusion = new picked_infusion
+	picked_infusion = new picked_infusion()
 
 	if(!length(picked_infusion.output_organs))
 		return FALSE
@@ -27,7 +27,8 @@
 	. = picked_infusion
 	for(var/obj/item/organ/infusion_organ as anything in picked_infusion.output_organs)
 		var/obj/item/organ/new_organ = new infusion_organ()
-		if(!new_organ.replace_into(target))
+		new_organ.replace_into(target)
+		if(new_organ.owner != target)
 			to_chat(usr, span_notice("[target] is unable to carry [new_organ]!"))
 			qdel(new_organ)
 			. = FALSE

code/modules/surgery/organs/_organ.dm

@@ -356,7 +356,7 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 
 /// Tries to replace the existing organ on the passed mob with this one, with special handling for replacing a brain without ghosting target
 /obj/item/organ/proc/replace_into(mob/living/carbon/new_owner)
-	return Insert(new_owner, special = TRUE, movement_flags = DELETE_IF_REPLACED)
+	Insert(new_owner, special = TRUE, movement_flags = DELETE_IF_REPLACED)
 
 
 /// Get all possible organ slots by checking every organ, and then store it and give it whenever needed