RFR: 8335623: Cleanup HtmlTag.HtmlTag and make the Aria role attribute global

[Chen Liang]

On Wed, 3 Jul 2024 14:17:14 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

> Can I please get a review for this small change? It removes some lines that are no longer necessary and sets the Aria role as global.
> Thanks in advance.

All these removed keys are already marked global.

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Marked as reviewed by liach (Committer).

PR Review: https://git.openjdk.org/jdk/pull/20007#pullrequestreview-2156601635