RFR: 8358723: jpackage signing issues: the main launcher doesn't have entitlements

[Alexander Matveev]

On Thu, 25 Sep 2025 16:06:37 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

> Fix the regression introduced by [JDK-8333664](https://bugs.openjdk.org/browse/JDK-8333664) that jpackage was not using entitlements when signing directories. This gave the main launcher no entitlements.
> 
> Additionally, enhance `jdk.jpackage.internal.util.PListReader` class.
> 
> Test code will verify that all launchers have the entitlements when `--mac-sign` is used or when a predefined app image is signed.
> 
> Ensured signing tests failed without the fix to `AppImageSigner.java` and that they passed with the fix.

Looks good.

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Marked as reviewed by almatvee (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27493#pullrequestreview-3269837143