[jdk21u-dev] RFR: 8319648: java/lang/SecurityManager tests ignore vm flags

[Goetz Lindenmaier]

I backport this for parity with 21.0.4-oracle.

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Commit messages:
 - Backport 437cf354e2d1f7df79fa32265ccf86a0e84257b5

Changes: https://git.openjdk.org/jdk21u-dev/pull/402/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=402&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319648
  Stats: 9 lines in 2 files changed: 1 ins; 3 del; 5 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/402.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/402/head:pull/402

PR: https://git.openjdk.org/jdk21u-dev/pull/402