disable CodeSignCloneManagerTest.InvalidDirhelperPath on unsupported

macOS versions

Change-Id: Id7cb7b6e9dee301fa2e8a772daafdafb65190563
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5615791


Owners-Override: Adithya Srinivasan <adithyas@chromium.org>
Reviewed-by: Adithya Srinivasan <adithyas@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1312841}