[jdk22u] RFR: 8331931: JFR: Avoid loading regex classes during startup

[Xiaolong Peng]

Backport [JDK-8331931](https://bugs.openjdk.org/browse/JDK-8331931) JFR: Avoid loading regex classes during startup


### Validation
Run test ```make test TEST=jdk/jdk/jfr```, all tests passed.


Test results: passed: 592
Report written to /local/home/xlpeng/repos/jdk22u-xlpeng/build/linux-aarch64-server-fastdebug/test-results/jtreg_test_jdk_jdk_jfr/html/report.html
Results written to /local/home/xlpeng/repos/jdk22u-xlpeng/build/linux-aarch64-server-fastdebug/test-support/jtreg_test_jdk_jdk_jfr
Finished running test 'jtreg:test/jdk/jdk/jfr'
Test report is stored in build/linux-aarch64-server-fastdebug/test-results/jtreg_test_jdk_jdk_jfr

==============================
Test summary
==============================
   TEST                                              TOTAL  PASS  FAIL ERROR   
   jtreg:test/jdk/jdk/jfr                              592   592     0     0   
==============================
TEST SUCCESS

Finished building target 'test' in configuration 'linux-aarch64-server-fastdebug'

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

Commit messages:
 - Backport 242446b07fcfcac136510495d1ff16d26859aea4

Changes: https://git.openjdk.org/jdk22u/pull/241/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk22u&pr=241&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331931
  Stats: 4 lines in 1 file changed: 1 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk22u/pull/241.diff
  Fetch: git fetch https://git.openjdk.org/jdk22u.git pull/241/head:pull/241

PR: https://git.openjdk.org/jdk22u/pull/241