[orca-list] graceful handling of missing braille display

[Vojtěch Polášek <krecoun gmail com>]

Hi,

I have the following experience and I don't find it normal nor useful.

1. Connect a braille display.

2. Enable braille in Orca settings and save.

3. Disconnect the braille display. Orca stops talking, even after
restarting Orca.

I have to connect the braille display back, restart Orca, disable braile
in settings and save settings to be able to use Orca without braille
display. Could this  be changed in a such way sothat if Orca detects
that there is no braille display, it will simply disable braille it self
and continue running?

Thanks alot,

Vojta