CVE-2026-97950 configfs: pin the symlink target's dirent instead of chasing ->ci_dentry

In the Linux kernel, the following vulnerability has been resolved: configfs: pin the symlink target's dirent instead of chasing -cidentry createlink reads the target's configfsdirent from item-cidentry-dfsdata, relying on the item reference taken by gettarget. That reference pins the item, not i...