[jdk21u-dev] RFR: 8347296: WinInstallerUiTest fails in local test runs if the path to test work directory is longer that regular

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle.

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Commit messages:
 - Backport b3e87360917fd56df8aa0a927723a561dcb840a2

Changes: https://git.openjdk.org/jdk21u-dev/pull/1751/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1751&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8347296
  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1751.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1751/head:pull/1751

PR: https://git.openjdk.org/jdk21u-dev/pull/1751