[jdk21u-dev] RFR: 8341235: Improve default instruction frame title in PassFailJFrame

[Goetz Lindenmaier]

I backport this for parity with 21.0.6-oracle.

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Commit messages:
 - Backport 4ba170c403ae85576f84dafd4a157ba0db99873f

Changes: https://git.openjdk.org/jdk21u-dev/pull/1121/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1121&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341235
  Stats: 42 lines in 1 file changed: 39 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1121.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1121/head:pull/1121

PR: https://git.openjdk.org/jdk21u-dev/pull/1121