RFR: 8328484: Convert and Opensource few JFileChooser applet test to main

[Tejesh R]

On Fri, 22 Mar 2024 08:55:26 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

> Few closed manual applet JFileChooser tests convereted to PassFailJFrame based manual test.

Looks good to me.

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Marked as reviewed by tr (Committer).

PR Review: https://git.openjdk.org/jdk/pull/18447#pullrequestreview-1954522722