Blender Git Loki

Fix T59381: UV editor - Pinned vertex missing update

Pinning doesn't really change the geometry, so we don't really have a
tag for this. Using '0' for now (same we use for Mark Seam).

I will check with Sergey Sharybin which flag to use instead.
We could use ID_RECALC_GEOMETRY to match the notifier, but even the
simpler ID_RECALC_SELECT would do it.