[jdk25u] RFR: 8364764: java/nio/channels/vthread/BlockingChannelOps.java subtests timed out

[Anawesha Khuntia]

Ran open/ test/jdk/java/nio/channels/vthread/BlockingChannelOps.java and it has passed across platforms

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Commit messages:
 - Backport f0498c2aed761d4023917bc9cd1f852a02ce977a

Changes: https://git.openjdk.org/jdk25u/pull/320/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=320&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8364764
  Stats: 111 lines in 1 file changed: 80 ins; 2 del; 29 mod
  Patch: https://git.openjdk.org/jdk25u/pull/320.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/320/head:pull/320

PR: https://git.openjdk.org/jdk25u/pull/320