[MIRROR] Refactors Rabbits to be a Basic Mob [MDB IGNORE] (#17499)

* Refactors Rabbits to be a Basic Mob (#71205)

## About The Pull Request

Back in #64175, I reworked rabbits such that their base behavior was
just a cute fluffy snuggle monster, and not have the "easter" variant be
the default. Now that we're transitioning everything from simple_animal
to basic, I figured now was the time to shift that over too.

Pretty much everything should be the same as it was before, I even took
some time to add behavior to some elements to allow it to work (let me
know if I should handle it a different way) but rabbits as a
simple_animal and rabbits as a basic mob should now not be very
distinguishable (beyond the fact that they only speak via subtrees).

I also got rid of the single-letter icon_states in the DMI and
accomodated the code to fix because I finally got irritated enough to do
something about that.
## Why It's Good For The Game

Although I didn't really have any pressing urge to add more complex AI
behavior to rabbits than just pretty much re-implementing what they had
as a simple_animal, this is an excellent first-step to allowing much
more extensible behaviors to these fuzzy creatures.

Also, it takes three more mobs off "the frozen list". Whoopie!
## Changelog
🆑
fix: Dead Black Space Rabbits should now properly have a sprite.
/🆑

The UpdatePaths is useless for the maps we have on our repository
(holodecks use a spawner code-side), but I'm going to be nice to
downstreams who need it.

* Refactors Rabbits to be a Basic Mob

* Fixed the CI and the rabbit on VoidRaptor

* Oops, forgot to remove it from here too

Co-authored-by: san7890 <the@san7890.com>
Co-authored-by: GoldenAlpharex <jerego1234@hotmail.com>

code/datums/ai/basic_mobs/basic_subtrees/speech_subtree.dm

@@ -54,6 +54,28 @@
 	emote_hear = list("bleats.")
 	emote_see = list("shakes her head.", "stares into the distance.")
 
+/datum/ai_planning_subtree/random_speech/rabbit
+	speech_chance = 10
+	speak = list("Mrrp.", "CHIRP!", "Mrrp?") // rabbits make some weird noises dude i don't know what to tell you
+	emote_hear = list("hops.")
+	emote_see = list("hops around.", "bounces up and down.")
+
+/// For the easter subvariant of rabbits, these ones actually speak catchphrases.
+/datum/ai_planning_subtree/random_speech/rabbit/easter
+	speak = list(
+		"Hop into Easter!",
+		"Come get your eggs!",
+		"Prizes for everyone!",
+	)
+
+/// These ones have a space mask on, so their catchphrases are muffled.
+/datum/ai_planning_subtree/random_speech/rabbit/easter/space
+	speak = list(
+		"Hmph mmph mmmph!",
+		"Mmphe mmphe mmphe!",
+		"Hmm mmm mmm!",
+	)
+
 /datum/ai_planning_subtree/random_speech/cow
 	speech_chance = 1
 	speak = list("moo?","moo","MOOOOOO")