[jdk26] RFR: 8369227: Virtual thread stuck in PARKED state

[Alan Bateman]

Clean backport to fix regression in JDK 25 when VirtualThread implementation was changed to use the FJP delayed task  support.

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Commit messages:
 - Backport f83918c692143802f2e94bed72dfe7121d1742f9

Changes: https://git.openjdk.org/jdk/pull/29086/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29086&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369227
  Stats: 165 lines in 3 files changed: 143 ins; 11 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/29086.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29086/head:pull/29086

PR: https://git.openjdk.org/jdk/pull/29086