[jdk26u] RFR: 8376031: HttpsURLConnection.getServerCertificates() throws "java.lang.IllegalStateException: connection not yet open" for the HEAD method

[Johny Jose]

Clean backport of https://github.com/openjdk/jdk/commit/d7523ec8d2255675547c0746d076efd7af5dd5af except for copyright changes

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Commit messages:
 - Backport d7523ec8d2255675547c0746d076efd7af5dd5af

Changes: https://git.openjdk.org/jdk26u/pull/47/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk26u&pr=47&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8376031
  Stats: 499 lines in 4 files changed: 403 ins; 83 del; 13 mod
  Patch: https://git.openjdk.org/jdk26u/pull/47.diff
  Fetch: git fetch https://git.openjdk.org/jdk26u.git pull/47/head:pull/47

PR: https://git.openjdk.org/jdk26u/pull/47