[jdk21u-dev] RFR: 8340367: Opensource few AWT image tests

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle,

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Commit messages:
 - Backport 6c91a16f16cbeb1bb0a79459e7db1fd9f576e743

Changes: https://git.openjdk.org/jdk21u-dev/pull/1562/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1562&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340367
  Stats: 513 lines in 5 files changed: 513 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1562.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1562/head:pull/1562

PR: https://git.openjdk.org/jdk21u-dev/pull/1562