do not apply POSIX file attributes through symbolic links

[jmestwa-coder]

PosixViewAttribute applies permissions and ownership through symbolic links:

• FileUtils.defineFilePosixAttributeView looks the view up without NOFOLLOW_LINKS, so setPermissions/setOwner/setGroup land on the link target
• walkFileTree still hands symlinks to visitFile, so the followLinks="false" default documented on AbstractPathAction has no effect here
• a link planted in basePath whose name matches the PathCondition glob redirects the chmod/chown onto any file the process can reach
• FileManager.defineAttributeView goes through the same helper

Requesting the view with NOFOLLOW_LINKS makes the change fail on a link rather than hit its target, and the visitor now skips symlinks so a planted one does not abort the rollover action.

Checklist

• Base your changes on 2.x branch if you are targeting Log4j 2; use main otherwise
• ./mvnw verify succeeds (the build instructions)
• Non-trivial changes contain an entry file in the src/changelog/.2.x.x directory
• Tests are provided