[jdk21u-dev] RFR: 8219408: Tests should handle ${} in the view of jtreg "smart action"

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Commit messages:
 - Backport 353e1738f6eb9965571e1de881d209b698492e6e

Changes: https://git.openjdk.org/jdk21u-dev/pull/2188/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2188&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8219408
  Stats: 8 lines in 4 files changed: 0 ins; 8 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2188.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2188/head:pull/2188

PR: https://git.openjdk.org/jdk21u-dev/pull/2188