RFR: 8306137: Open source several AWT ScrollPane related tests [v11]

[Alexey Ivanov]

On Mon, 22 May 2023 13:51:46 GMT, Tejesh R <tr at openjdk.org> wrote:

>> Open source few AWT ScrollPane related tests.
>
> Tejesh R has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Updated based on review comments

I'm for resolving [this comment](https://github.com/openjdk/jdk/pull/13621#discussion_r1200559746) to make the output clearer.

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Changes requested by aivanov (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13621#pullrequestreview-1436719535