[jdk21u-dev] RFR: 8340271: Open source several AWT Robot tests

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

-------------

Commit messages:
 - Backport bc36ace72c1189dcd6d0c05d40d8c568acd89b01

Changes: https://git.openjdk.org/jdk21u-dev/pull/1594/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1594&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340271
  Stats: 182 lines in 2 files changed: 182 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1594.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1594/head:pull/1594

PR: https://git.openjdk.org/jdk21u-dev/pull/1594