Announce information about sorting ability for user when aria-sort has value none

[kolaps33]

When there is in header grid aria-sort attribute with "none" value, then NVDA doesn't announce any information.

Based on aria-example
https://www.w3.org/TR/wai-aria-practices/examples/grid/dataGrids.html#
There is recommendation role="none" when column is sortable but not sorted.
But in given example NVDA doesn't narrate to the screen reader user any information about ability of sort the column.

Describe the solution you'd like

Would be great to to narrate something like "sortable", when aria-sort="none"

Describe alternatives you've considered

if screen reader doesn't implement, then everyone who use it need to custom solution

Additional context

I find already discussion in JAWS backlog.
w3c/aria-practices#1192

[feerrenrut]

This would also imply that the UX is the same for all sortable data grids. That seems like a big assumptions to make.

Note that aria-sort can be used to indicate that data is already sorted, there may be no click handler on the heading, the user may not be able to change how the data is sorted. If NVDA announced "sortable", it would be confusing in the first situation. This is overloading the semantics of the attribute.

[Adriani90]

Given the comment by Reef above, I am closing as won't fix.