RFR: 8327538: The SSLExtension class specifies incorrect values for heartbeat per RFC 6520 and post_handshake_auth per RFC 8446

[Hai-May Chao]

8327538: The SSLExtension class specifies incorrect values for heartbeat per RFC 6520 and post_handshake_auth per RFC 8446

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Commit messages:
 - 8327538: The SSLExtension class specifies incorrect values for heartbeat per RFC 6520 and post_handshake_auth per RFC 8446

Changes: https://git.openjdk.org/jdk/pull/20261/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20261&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327538
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20261.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20261/head:pull/20261

PR: https://git.openjdk.org/jdk/pull/20261