RFR: 8339486: JFR: Modernize

[Erik Gahlin]

Could I have a review of a PR that leverages the Duration::until method introduced in JDK 23.

Testing: jdk/jdk/jfr

Thanks
Erik

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Commit messages:
 - Initial

Changes: https://git.openjdk.org/jdk/pull/20792/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20792&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339486
  Stats: 17 lines in 9 files changed: 0 ins; 0 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/20792.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20792/head:pull/20792

PR: https://git.openjdk.org/jdk/pull/20792