[jdk21u-dev] RFR: 8341191: Open source few more AWT FileDialog tests

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

One test fails, but also in head, I opened a bug for this.

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Commit messages:
 - Backport 50ec169116b486a49dc2dcb4218264bd48db79cc

Changes: https://git.openjdk.org/jdk21u-dev/pull/1626/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1626&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341191
  Stats: 328 lines in 4 files changed: 328 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1626.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1626/head:pull/1626

PR: https://git.openjdk.org/jdk21u-dev/pull/1626