RFR: 8368890: open/test/jdk/tools/jpackage/macosx/NameWithSpaceTest.java fails randomly

[Alexey Semenyuk]

Fix regression from [JDK-8358723](https://bugs.openjdk.org/browse/JDK-8358723).

Without the fix, the test failed 3 times out of 100 executions. With the fix, it didn't fail after 200 executions in the same environment.

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Commit messages:
 - 8368890: open/test/jdk/tools/jpackage/macosx/NameWithSpaceTest.java fails randomly

Changes: https://git.openjdk.org/jdk/pull/27555/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27555&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368890
  Stats: 17 lines in 1 file changed: 14 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/27555.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27555/head:pull/27555

PR: https://git.openjdk.org/jdk/pull/27555