[jdk21u-dev] RFR: 8217914: java/net/httpclient/ConnectTimeoutHandshakeSync.java failed on connection refused while doing POST

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle.

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Commit messages:
 - Backport e7a1c8660af50a321bc466be2b30412a5b5c4e3c

Changes: https://git.openjdk.org/jdk21u-dev/pull/1959/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1959&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8217914
  Stats: 22 lines in 3 files changed: 11 ins; 6 del; 5 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1959.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1959/head:pull/1959

PR: https://git.openjdk.org/jdk21u-dev/pull/1959