Rename /datum/config_entry/var/value to config_entry_value (#34699)

This works around some vv-fu you can use to pass in a config_entry to a proc that reads the value var of some other datum. Byond is stupid enough to actually read it, so it must be uniquely named.

code/controllers/configuration/entries/comms.dm

@@ -11,9 +11,9 @@
 	. = ..()
 	if(.)
 		var/list/newv = list()
-		for(var/I in value)
-			newv[replacetext(I, "+", " ")] = value[I]
-		value = newv
+		for(var/I in config_entry_value)
+			newv[replacetext(I, "+", " ")] = config_entry_value[I]
+		config_entry_value = newv
 
 /datum/config_entry/keyed_string_list/cross_server/ValidateListEntry(key_name, key_value)
 	return key_value != "byond:\\address:port" && ..()