[jdk26u] Integrated: Merge jdk:jdk26

[Nibedita Jena]

Merge

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Commit messages:
 - Merge remote-tracking branch 'jdk/jdk26' into Merge_02-03
 - 8374043: C2:  assert(_base >= VectorMask && _base <= VectorZ) failed: Not a Vector
 - 8373808: Refactor java/net/httpclient qpack and hpack tests to use JUnit
 - 8286258: [Accessibility,macOS,VoiceOver] VoiceOver reads the spinner value wrong and sometime partially
 - 8373704: Improve "SocketException: Protocol family unavailable" message
 - 8374727: Audio configuration Platform class - use nio for getting endianness of the underlying platform
 - 8375311: Some builds are missing debug helpers
 - 8373101: JdkClient and JdkServer test classes ignore namedGroups field
 - 8374178: Missing include in systemDictionary.cpp after JDK-8365526
 - 8376485: Update the release version and date for OpenJDK 26u
 - ... and 18 more: https://git.openjdk.org/jdk26u/compare/b43c4fce...f63cb102

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/jdk26u/pull/37/files
  Stats: 2496 lines in 131 files changed: 923 ins; 178 del; 1395 mod
  Patch: https://git.openjdk.org/jdk26u/pull/37.diff
  Fetch: git fetch https://git.openjdk.org/jdk26u.git pull/37/head:pull/37

PR: https://git.openjdk.org/jdk26u/pull/37