[jdk21u-dev] RFR: 8342958: Use jvmArgs consistently in microbenchmarks

[SendaoYan]

Hi all,

This is uncleanly backport of [JDK-8342958](https://bugs.openjdk.org/browse/JDK-8342958) to jdk21u-dev.

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Commit messages:
 - backport JDK-8343345
 - Backport 90bd544512de541cd98889bec58f419bc69a723d

Changes: https://git.openjdk.org/jdk21u-dev/pull/1403/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1403&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342958
  Stats: 37 lines in 26 files changed: 0 ins; 0 del; 37 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1403.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1403/head:pull/1403

PR: https://git.openjdk.org/jdk21u-dev/pull/1403