Moves the suicided var to where its supposed to be (#63470)

Co-authored-by: Fikou <23585223+Fikou@users.noreply.github.com>

code/modules/client/verbs/suicide.dm

@@ -1,5 +1,3 @@
-/mob/var/suiciding = FALSE
-
 /mob/proc/set_suicide(suicide_state)
 	suiciding = suicide_state
 	if(suicide_state)

code/modules/mob/mob_defines.dm

@@ -45,6 +45,9 @@
 	///Cursor icon used when holding shift over things
 	var/examine_cursor_icon = 'icons/effects/mouse_pointers/examine_pointer.dmi'
 
+	///Whether this mob has or is in the middle of committing suicide.
+	var/suiciding = FALSE
+
 	/// Whether a mob is alive or dead. TODO: Move this to living - Nodrak (2019, still here)
 	var/stat = CONSCIOUS