[jdk21u-dev] RFR: 8309067: gtest/AsyncLogGtest.java fails again in stderrOutput_vm

[Andrew Lu]

I backport this for parity with 21.0.5-oracle.
add added codes are clean, except line different.

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Commit messages:
 - Backport d1af748ab470e1068d03a8f8bc1a7445eff721fa
 - Backport d1af748ab470e1068d03a8f8bc1a7445eff721fa
 - Backport d1af748ab470e1068d03a8f8bc1a7445eff721fa
 - Backport d1af748ab470e1068d03a8f8bc1a7445eff721fa

Changes: https://git.openjdk.org/jdk21u-dev/pull/923/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=923&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309067
  Stats: 51 lines in 1 file changed: 19 ins; 17 del; 15 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/923.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/923/head:pull/923

PR: https://git.openjdk.org/jdk21u-dev/pull/923