[orca-list] LibreOffice: in dialog "print", Orca announces the /n label as panel

[Samuel Thibault <sthibault hypra fr>]

Hello,

Probably similarly to the issue that Alex reported:

Tested environment:
- Debian testing
- Orca master (and 3.26)
- Libreoffice 6.0.2

Steps to reproduce:
1) Open LibreOffice Writer
2) Press control-P
3) Press tab (getting to help button)
4) Press shift-tab (getting to the "number of copies" entry)

Orca would then announce various contexts, including a "/ 1 panel"
which doesn't make sense, where "/ 1" is the label giving the number
of pages of the preview.  I don't see anything in the .ui file or
accerciser which could lead to this.  In this perhaps a heuristic in
Orca which unfortunately gets triggered here?  I have tried setting
label-for/labelled-by between that label and the selected page for
preview (which makes complete sense anyway), but orca still uses it as a
panel name.  Perhaps the heuristic should be disabled when the label has
an explicit label-for?

Samuel