Fixes the follow menu having 100 ghost mobs. (#14828)

code/modules/mob/abstract/virtual/base.dm

@@ -14,6 +14,8 @@ var/global/list/all_virtual_listeners = list()
 	virtual_mob = null
 	no_z_overlay = TRUE
 
+	should_add_to_mob_list = FALSE
+
 	var/atom/movable/host
 	var/host_type = /atom/movable
 	var/abilities = VIRTUAL_ABILITY_HEAR|VIRTUAL_ABILITY_SEE

code/modules/mob/mob.dm

@@ -66,13 +66,15 @@
 	spell_masters = null
 	zone_sel = null
 
+/mob/var/should_add_to_mob_list = TRUE
 /mob/Initialize()
 	. = ..()
-	mob_list += src
-	if(stat == DEAD)
-		dead_mob_list += src
-	else
-		living_mob_list += src
+	if(should_add_to_mob_list)
+		mob_list += src
+		if(stat == DEAD)
+			dead_mob_list += src
+		else
+			living_mob_list += src
 
 	if (!ckey && mob_thinks)
 		MOB_START_THINKING(src)

html/changelogs/matt-aaaa.yml

@@ -0,0 +1,41 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes:
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.
+author: MattAtlas
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes:
+  - bugfix: "The ghost follow menu should no longer be spammed with 100s of ghost mobs."