Issue with multilevel use/transclude.

[renpytom]

https://lemmasoft.renai.us/forums/viewtopic.php?p=546519#p546519

## how to replicate: open "Help" screen, click left "Increase" button, see variable not changing

screen box2():
  vbox:
    align (0.25,0.5)
#    $pass
    transclude

screen box1():
  use box2:
    transclude

screen box2x():
  vbox:
    align (0.75,0.5)
    $pass
    transclude

screen box1x():
  use box2x:
    transclude

screen help():
  tag menu
  default some_var=1
  default some_varx=9001
  use box1:
    vbox:
      text "BUGGED: [some_var]"
      textbutton "Increase" action SetScreenVariable("some_var",some_var+1)
  use box1x:
    vbox:
      text "WORKING: [some_varx]"
      textbutton "Increase" action SetScreenVariable("some_varx",some_varx+1)
  textbutton "Return":
    action Return()
    keysym "game_menu"

label start:
  "test"
  return