[jdk21u-dev] RFR: 8315602: Open source swing security manager test

[Amos Shi]

Backport of [JDK-8311081](https://bugs.openjdk.org/browse/JDK-8311081)

Testing
- Local: Passed
- Pipeline: 
- Testing Machine:

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Commit messages:
 - Backport fd6442c079748dcaff3bb565dc35b108b68a61bd

Changes: https://git.openjdk.org/jdk21u-dev/pull/239/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=239&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315602
  Stats: 55 lines in 1 file changed: 55 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/239.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/239/head:pull/239

PR: https://git.openjdk.org/jdk21u-dev/pull/239