RFR: 8323693: Update some copyright announcements in the new files created in 8234502

[Lei Zaakjyu]

see 'https://github.com/openjdk/jdk/pull/17398#pullrequestreview-1819022919'

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Commit messages:
 - update copyright

Changes: https://git.openjdk.org/jdk/pull/17412/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17412&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323693
  Stats: 18 lines in 18 files changed: 0 ins; 0 del; 18 mod
  Patch: https://git.openjdk.org/jdk/pull/17412.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17412/head:pull/17412

PR: https://git.openjdk.org/jdk/pull/17412