Web: Don't announce row and column count when they are both 0
Web: Don't announce row and column count when they are both 0

If an author uses the grid and gridcell roles without also using the
row role (an authoring error), user agents report a table with 0 rows
and 0 columns. That's useless noise. In that case just announce the
table so the user knows they're inside one, and hope the author got
the rest of the ARIA and expected keyboard nav right.

GNOME/orca,GNOME/orca,GNOME/orca,GNOME/orca