FeatureQuerySet: make check for date inclusive (#7737)

Author: stsewd

readthedocs/projects/querysets.py

@@ -240,7 +240,7 @@ def for_project(self, project):
         return self.filter(
             Q(projects=project) |
             Q(default_true=True, add_date__gt=project.pub_date) |
-            Q(future_default_true=True, add_date__lt=project.pub_date)
+            Q(future_default_true=True, add_date__lte=project.pub_date)
         ).distinct()