Mobile/dialog comboboxes: Async comboboxes don't load options on the first try

[josefarias]

If you click an async combobox on a small screen, the options are only loaded to the original listbox, not the dialog listbox.

You need to close the combobox and re-open in order to see the options.

Seems like filtering is broken, too.

Probably regressed in https://github.com/josefarias/hotwire_combobox/pull/55