RFR: 8376889: Enhance JfrRecorder::on_create_vm_3() assert output

[Matthias Baesken]

There is an assert in JfrRecorder::on_create_vm_3 checking for JVMTI_PHASE_LIVE, but in case another phase is found it is not printed.
This should be improved.

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Commit messages:
 - JDK-8376889

Changes: https://git.openjdk.org/jdk/pull/29521/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29521&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8376889
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/29521.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29521/head:pull/29521

PR: https://git.openjdk.org/jdk/pull/29521