RFR: 8316273: JDK-8315818 broke JVMCIShowProperties on libgraal

[Doug Simon]

This PR prevents the possibility for `JVMCIPrintProperties` to emit output more than once. That possibility was introduced by [JDK-8315818](https://bugs.openjdk.org/browse/JDK-8315818) by allowing JVMCI initialization to happen earlier on a compiler thread that races with the main thread in terms of JVMCI initialization.

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Commit messages:
 - do not initialize compilation if JVMCIPrintProperties or JVMCILibDumpJNIConfig is true

Changes: https://git.openjdk.org/jdk/pull/15739/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15739&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316273
  Stats: 11 lines in 1 file changed: 9 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/15739.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15739/head:pull/15739

PR: https://git.openjdk.org/jdk/pull/15739