[jdk21u] RFR: 8313904: [macos] All signing tests which verifies unsigned app images are failing

Thu Aug 17 00:17:50 UTC 2023

Clean backport of JDK-8313904.

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Commit messages:
 - Backport ec0cc6300a02dd92b25d9072b8b3859dab583bbd

Changes: https://git.openjdk.org/jdk21u/pull/67/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=67&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313904
  Stats: 94 lines in 8 files changed: 58 ins; 0 del; 36 mod
  Patch: https://git.openjdk.org/jdk21u/pull/67.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/67/head:pull/67

PR: https://git.openjdk.org/jdk21u/pull/67