[jdk17u-dev] RFR: 8273541: Cleaner Thread creates with normal priority instead of MAX_PRIORITY - 2

[Matthias Baesken]

8273541: Cleaner Thread creates with normal priority instead of MAX_PRIORITY - 2

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Commit messages:
 - Backport 4e6de5f9defc031158e027bcbbaf6232b8c03d60

Changes: https://git.openjdk.org/jdk17u-dev/pull/2701/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2701&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8273541
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2701.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2701/head:pull/2701

PR: https://git.openjdk.org/jdk17u-dev/pull/2701