fix round tie loop + improve tie ranking

src/warchron/model/campaign.py

@@ -187,6 +187,7 @@ class Campaign:
         mission: str | None,
         description: str | None,
     ) -> None:
+        # TODO raise error if sector used in a closed round (potential tokens)
         if self.is_over:
             raise ForbiddenOperation("Can't update sector in a closed campaign.")
         sect = self.get_sector(sector_id)