Project: use new field for sorting (#12398)

ref #12392

Author: stsewd

readthedocs/projects/filters.py

@@ -127,7 +127,7 @@ def filter(self, qs, value):
             field = field_ordered.lstrip("-")
 
             if field == self.SORT_BUILD_DATE:
-                annotations[self.SORT_BUILD_DATE] = Max("builds__date")
+                annotations[self.SORT_BUILD_DATE] = F("latest_build__date")
             elif field == self.SORT_BUILD_COUNT:
                 annotations[self.SORT_BUILD_COUNT] = Count("builds")