DNR'd / playerless bodies risen as zombies are ghost controllable (though mindless bodies are weaker) (#95544)

## About The Pull Request

- A body that revives as a zombie but has no player (IE never had a
player or the player DNR'd) becomes is ghost controllable: A poll is
immediately offered, and the body itself appears in the spawners menu.

- Zombies created from **mindless** mobs (such as monkeys or roundstart
morgue cadavers) are **Mindless Zombies**, a subtype of zombie which is
weaker (heal slower, move slower, not guaranteed to infect on hit)

## Why It's Good For The Game

- When zombies get rolling, there will no doubt be a few players that
DNR or a few DNR'd bodies that get infected, and it results in a lot of
zombies without players standing around, which is kinda lame. Giving
ghosts the options to take over seems like a no-brains-er to me, keeps
the horde a bit active even if some get decapitated.

- However, one big problem this allows for is that it provides a clear
vector for people spamming zombies out of hu-monkeys. Thus I changed
mindless bodies (bodies which never had a player, even a DNR'd one
(hu-monkeys)) to be easier to handle and far less deadly. That way
traitors are still encouraged to infect players over npcs.

## Changelog

🆑 Melbert
add: If a playerless body (DNR'd or otherwise) is raised as a zombie,
ghosts are given the ability to take control of it
add: If a body that never had a player control it is risen as a zombie,
they are risen as a weaker "mindless zombie" (moves and heals slower,
deals less damage, infection is not guaranteed on hit)
/🆑

code/datums/components/ghost_direct_control.dm

@@ -12,6 +12,8 @@
 	var/datum/callback/after_assumed_control
 	/// If we're currently awaiting the results of a ghost poll
 	var/awaiting_ghosts = FALSE
+	/// Entry in the spawners menu, optional
+	var/joinable_mobs_title
 
 /datum/component/ghost_direct_control/Initialize(
 	ban_type = ROLE_SENTIENCE,
@@ -25,6 +27,7 @@
 	assumed_control_message = null,
 	datum/callback/extra_control_checks,
 	datum/callback/after_assumed_control,
+	joinable_mobs_title = null,
 )
 	. = ..()
 	if (!isliving(parent))
@@ -34,9 +37,10 @@
 	src.assumed_control_message = assumed_control_message || "You are [parent]!"
 	src.extra_control_checks = extra_control_checks
 	src.after_assumed_control = after_assumed_control
+	src.joinable_mobs_title = joinable_mobs_title
 
 	var/mob/mob_parent = parent
-	LAZYADD(GLOB.joinable_mobs[format_text("[initial(mob_parent.name)]")], mob_parent)
+	LAZYADDASSOCLIST(GLOB.joinable_mobs, joinable_mobs_title || format_text(initial(mob_parent.name)), mob_parent)
 
 	if (poll_candidates)
 		INVOKE_ASYNC(src, PROC_REF(request_ghost_control), poll_question, role_name || "[parent]", poll_length, poll_ignore_key, poll_announce_chosen, poll_chat_border_icon)
@@ -56,10 +60,7 @@
 	after_assumed_control = null
 
 	var/mob/mob_parent = parent
-	var/list/spawners = GLOB.joinable_mobs[format_text("[initial(mob_parent.name)]")]
-	LAZYREMOVE(spawners, mob_parent)
-	if(!LAZYLEN(spawners))
-		GLOB.joinable_mobs -= format_text("[initial(mob_parent.name)]")
+	LAZYREMOVEASSOC(GLOB.joinable_mobs, joinable_mobs_title || format_text(initial(mob_parent.name)), mob_parent)
 	return ..()
 
 /// Inform ghosts that they can possess this