[Question] How to pass a default value to input_dialog()

[martinburchell]

I'm looking for a way to pass a default value to input_dialog(). Is there one? From the code it doesn't look like it.

It looks like the default value would just need to be passed as the text parameter to TextArea() (not to be confused with the text parameter to input_dialog()).

If this is the case, would you accept a PR or would you rather keep input_dialog() simple? I note there is a related PR #651