Merge topic 'file-REAL_PATH'

1d12853ed3 file(REAL_PATH): Ensure same behavior as get_filename_component(REALPATH)

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Acked-by: scivision <michael@scivision.dev>
Merge-request: !8348