RFR: 8317886: Add @sealedGraph to ByteBuffer

[Per Minborg]

This PR proposed to Add @sealedGraph to `ByteBuffer`.

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Commit messages:
 - Add @sealedGraph to ByteBuffer

Changes: https://git.openjdk.org/jdk/pull/16142/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16142&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317886
  Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/16142.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16142/head:pull/16142

PR: https://git.openjdk.org/jdk/pull/16142