[jdk21u-dev] RFR: 8365972: JFR: ThreadDump and ClassLoaderStatistics events may cause back to back rotations

[Goetz Lindenmaier]

I backport this for parity with 21.0.11-oracle

Trivial resolves in PlatformEventType.java

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Commit messages:
 - backport 681dab7205190176b842bd42914b1cb9fe752e44

Changes: https://git.openjdk.org/jdk21u-dev/pull/2566/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2566&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8365972
  Stats: 146 lines in 4 files changed: 141 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2566.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2566/head:pull/2566

PR: https://git.openjdk.org/jdk21u-dev/pull/2566