update to lua template

apps/templates/lua/data/scripts/game.lua

@@ -1,8 +1,7 @@
 -- called every frame, with constant delta time
 function game_tick()
-    -- ctx.initialization_needed is true first frame and every time dynamic reload is performed
+    -- ctx.udata persists on code reload
-    if ctx.initialization_needed then
+    if ctx.udata == nil then
-        -- ctx.udata persists on reload
         ctx.udata = {}
     end
 end