RFR: 8328382: Convert java/awt/FileDialog/FileDialogForPackages test to main [v3]

[Prasanta Sadhukhan]

On Fri, 22 Mar 2024 05:15:38 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

>> Convert test to a main based;
>> Move test to an appropriate folder;
>> Remove old files;
>
> Alexander Zuev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Got rid of the test window, using OassFailJFrame instead;
>   Made all variables local;
>   Minor changes based on review comments;

Marked as reviewed by psadhukhan (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/18360#pullrequestreview-1954019349