RFR: 8350786: Some java/lang jtreg tests miss requires vm.hasJFR

[Matthias Baesken]

While testing a bit with a minimal JVM, it has been noticed that some java/lang jtreg tests use jfr but do not declare it with a "requires vm.hasJFR" ; that leads to test errors in a JVM setup with no JFR .

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Commit messages:
 - JDK-8350786

Changes: https://git.openjdk.org/jdk/pull/23805/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23805&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8350786
  Stats: 3 lines in 3 files changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/23805.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23805/head:pull/23805

PR: https://git.openjdk.org/jdk/pull/23805