[jdk21u-dev] RFR: 8338426: Test java/nio/channels/Selector/WakeupNow.java failed

[Goetz Lindenmaier]

I backport this for parity with 21.0.7-oracle

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Commit messages:
 - Backport 0853aee3b377cf9f17340a85f600651db42e6999

Changes: https://git.openjdk.org/jdk21u-dev/pull/1262/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1262&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8338426
  Stats: 15 lines in 1 file changed: 4 ins; 2 del; 9 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1262.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1262/head:pull/1262

PR: https://git.openjdk.org/jdk21u-dev/pull/1262