[505994] Fix cascading filter on refined diffs

Refined diffs that are not in direct conflict but have at least on
refining diff in REAL conflict should not be filtered out by the
cascading filter.

bug: 505994
Change-Id: Ife2ccc3d6319e381c16d5d2a5a68295e7a73ac6a
Signed-off-by: Laurent Delaigue <laurent.delaigue@obeo.fr>
6 files changed