[jdk21u-dev] RFR: 8340411: open source several 2D imaging tests

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

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Commit messages:
 - Backport 8dcf7b8fa7b17bf34c62c561c6ed78e8080df1ff

Changes: https://git.openjdk.org/jdk21u-dev/pull/1385/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1385&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340411
  Stats: 485 lines in 4 files changed: 485 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1385.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1385/head:pull/1385

PR: https://git.openjdk.org/jdk21u-dev/pull/1385