Fix `Geo::ProjectRegistry.failed` scope to count projects where wiki sync failed.

Merged Douglas Barbosa Alexandre requested to merge geo-fix-node-status into master

What does this MR do?

Fix Geo::ProjectRegistry.failed scope to count projects where wiki sync failed.

Are there points in the code the reviewer needs to double check?

No.

Why was this MR needed?

Geo node status page shows wrong values for Repositories failed when the repository sync succeeds but the wiki sync fails.

Does this MR meet the acceptance criteria?

/cc @stanhu @brodock @to1ne