RFR: 8271071 accessibility of a table on macOS lacks cell navigation [v5]

[Victor Dyakov]

On Thu, 30 Sep 2021 12:02:08 GMT, Artem Semenov <asemenov at openjdk.org> wrote:

>> We've extended the current implementation of TableAccessibility to make sure that individual cells are voiced when navigating with the keyboard.
>
> Artem Semenov has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR.

@pbansal please review

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PR: https://git.openjdk.java.net/jdk/pull/5466