Fix /notifications and pushers misbehaving because of unread counts

changelog.d/8280.bugfix

@@ -0,0 +1 @@
+Fix a bug introduced in v1.20.0rc1 causing some features related to notifications to misbehave following the implementation of unread counts.

synapse/storage/databases/main/event_push_actions.py

@@ -191,7 +191,7 @@ async def get_push_action_users_in_range(
         def f(txn):
             sql = (
                 "SELECT DISTINCT(user_id) FROM event_push_actions WHERE"
-                " stream_ordering >= ? AND stream_ordering <= ?"
+                " stream_ordering >= ? AND stream_ordering <= ? AND notif = 1"
             )
             txn.execute(sql, (min_stream_ordering, max_stream_ordering))
             return [r[0] for r in txn]
@@ -639,7 +639,7 @@ def f(txn):
                 "SELECT e.received_ts"
                 " FROM event_push_actions AS ep"
                 " JOIN events e ON ep.room_id = e.room_id AND ep.event_id = e.event_id"
-                " WHERE ep.stream_ordering > ?"
+                " WHERE ep.stream_ordering > ? AND notif = 1"
                 " ORDER BY ep.stream_ordering ASC"
                 " LIMIT 1"
             )
@@ -703,6 +703,7 @@ def f(txn):
                 " FROM event_push_actions epa, events e"
                 " WHERE epa.event_id = e.event_id"
                 " AND epa.user_id = ? %s"
+                " AND epa.notif = 1"
                 " ORDER BY epa.stream_ordering DESC"
                 " LIMIT ?" % (before_clause,)
             )