RFR: 8354365: Opensource few Modal and Full Screen related tests [v2]

[Tejesh R]

On Thu, 17 Apr 2025 06:31:03 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

>> Few Modal and Full Screen related tests are converted from applet and open sourced.
>
> Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review fix

Marked as reviewed by tr (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24685#pullrequestreview-2774722935