[jdk24u] RFR: 8347300: Don't exclude the "PATH" var from the environment when running app launchers in jpackage tests

[Anawesha Khuntia]

Straight Backport. Mach5 runs passed

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Commit messages:
 - 8347300: Don't exclude the PATH var from the environment when running app launchers in jpackage tests

Changes: https://git.openjdk.org/jdk24u/pull/179/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk24u&pr=179&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8347300
  Stats: 38 lines in 4 files changed: 19 ins; 3 del; 16 mod
  Patch: https://git.openjdk.org/jdk24u/pull/179.diff
  Fetch: git fetch https://git.openjdk.org/jdk24u.git pull/179/head:pull/179

PR: https://git.openjdk.org/jdk24u/pull/179