feat: hide event types from SAC UI via Settings checkbox (0.20.23)

Per-type «Показывать в событиях» in severity settings; filters lists, dashboard, hosts, and problems.

backend/app/api/v1/problems.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timedelta, timezone
+from datetime import datetime, timedelta, timezone
 
 
 
@@ -17,6 +17,7 @@ from app.auth.jwt_auth import get_current_user
 from app.database import get_db
 
 from app.models import Event, Host, Problem, ProblemEvent
+from app.services.event_type_visibility import get_hidden_event_types
 
 
 
@@ -269,6 +270,8 @@ def get_problem(
         .order_by(Event.occurred_at.desc())
 
     ).all()
+    hidden = get_hidden_event_types(db)
+    event_rows = [event for event in event_rows if event.type not in hidden]