[jdk24u] RFR: 8346285: Update jarsigner compatibility test for change in default digest algorithm

[Nibedita Jena]

Clean backport

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Commit messages:
 - Backport e7d21fcf4949106e89afd413e9abc47d622dd47a

Changes: https://git.openjdk.org/jdk24u/pull/135/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk24u&pr=135&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8346285
  Stats: 10 lines in 1 file changed: 7 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk24u/pull/135.diff
  Fetch: git fetch https://git.openjdk.org/jdk24u.git pull/135/head:pull/135

PR: https://git.openjdk.org/jdk24u/pull/135