[jdk17u-dev] RFR: 8159599: [TEST_BUG] java/awt/Modal/ModalInternalFrameTest/ModalInternalFrameTest.java

[Goetz Lindenmaier]

I backport this for parity with 17.0.6-oracle.

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Commit messages:
 - Backport f5beafa53f93a6ec03278dfd7063d7b3b0b9d241

Changes: https://git.openjdk.org/jdk17u-dev/pull/698/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=698&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8159599
  Stats: 23 lines in 2 files changed: 13 ins; 3 del; 7 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/698.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/698/head:pull/698

PR: https://git.openjdk.org/jdk17u-dev/pull/698