tighten check on allowed values for hud_change

notify.lua

@@ -1,8 +1,6 @@
 local mod_name = minetest.get_current_modname()
 local hud_name = ("%s_feedback"):format(mod_name)
 
-local is_multicraft = minetest.get_version().project == "MultiCraft"
-
 local hud_info_by_player_name = {}
 local hud_timeout_seconds = 3
 
@@ -47,8 +45,8 @@ local function hud_update(player, player_name, hud_id, message, params)
 	local def = get_hud_def(message, params)
 
 	for key, value in pairs(def) do
-		-- multicraft has a bug that requires the "value" argument of hud_change to be a number
-		if not is_multicraft or type(value) == "number" then
+		-- minetest < 5.5 and multicraft can't handle changes to hud_elem_type
+		if key ~= "hud_elem_type" then
 			player:hud_change(hud_id, key, value)
 		end
 	end