RFR: 8341131: Some jdk/jfr/event/compiler tests shouldn't be executed with Xcomp

[Leonid Mesnik]

Few jdk/jfr/event/compiler tests sensitive to compile flags and shouldn't be executed with Xcomp.

-------------

Commit messages:
 - fixed requires.

Changes: https://git.openjdk.org/jdk/pull/21239/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21239&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341131
  Stats: 5 lines in 3 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/21239.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21239/head:pull/21239

PR: https://git.openjdk.org/jdk/pull/21239