karax, redraw a textarea

[geotre]

You don't need to use `setTimeout`. If you look at the [implementation of 
setInputText](https://github.com/karaxnim/karax/blob/f4014d134ff48e118eb4810e9ebceb2920f1af1b/karax/karax.nim#L891)
 you can see that it updates the dom element immediately.