[jdk21u-dev] RFR: 8319578: Few java/lang/instrument ignore test.java.opts and accept test.vm.opts only

[Goetz Lindenmaier]

I backport this for parity with 21.0.4-oracle.

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Commit messages:
 - Backport 3ebe6c192a5dd5cc46ae2d263713c9ff38cd46bb

Changes: https://git.openjdk.org/jdk21u-dev/pull/462/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=462&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319578
  Stats: 35 lines in 14 files changed: 0 ins; 0 del; 35 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/462.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/462/head:pull/462

PR: https://git.openjdk.org/jdk21u-dev/pull/462