RFR: 8327492: Remove applet usage and update DisposeInActionEventTest.html [v11]

[Harshitha Onkar]

On Wed, 6 Mar 2024 21:36:10 GMT, Alisen Chung <achung at openjdk.org> wrote:

>> Root cause of the test failure was fixed with https://bugs.openjdk.org/browse/JDK-8316931, updating this test since the other fix also included a test update.
>
> Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:
> 
>   null check for system tray before remove

Marked as reviewed by honkar (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk/pull/17838#pullrequestreview-1920885698