[jdk21u-dev] RFR: 8324491: Keyboard layout didn't keep its state if it was changed when dialog was active

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Commit messages:
 - Backport 2be07b5f9d2f3f0b885feb08ff10a57824ea5748

Changes: https://git.openjdk.org/jdk21u-dev/pull/2201/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2201&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324491
  Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2201.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2201/head:pull/2201

PR: https://git.openjdk.org/jdk21u-dev/pull/2201