[jdk17u-dev] RFR: 8354415: [Ubuntu25.04] api/java_awt/GraphicsDevice/indexTGF.html#SetDisplayMode - setDisplayMode_REFRESH_RATE_UNKNOWN fails: Height is different on vnc

[Goetz Lindenmaier]

I backport this for parity with 17.0.17-oracle.

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Commit messages:
 - Backport 6f6974f6320e51a7842ec6715ffa8409833fe465

Changes: https://git.openjdk.org/jdk17u-dev/pull/3848/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3848&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354415
  Stats: 355 lines in 3 files changed: 347 ins; 1 del; 7 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3848.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3848/head:pull/3848

PR: https://git.openjdk.org/jdk17u-dev/pull/3848