fix(): business logic fixes and code refactoring

src/backend/api/v1/events/endpoints.py

@@ -45,6 +45,7 @@ def create_event_type(
         name=payload.name,
         display_name=payload.display_name,
         description=payload.description,
+        is_exposure=payload.is_exposure,
         requires_exposure=payload.requires_exposure,
         required_fields=payload.required_fields,
     )
@@ -95,7 +96,7 @@ def update_event_type(
     et = event_type_get(event_type_id)
     if not et:
         raise Http404
-    fields = payload.dict(exclude_unset=True)
+    fields = payload.model_dump(exclude_unset=True)
     updated = event_type_update(event_type=et, **fields)
     return HTTPStatus.OK, EventTypeOut.model_validate(updated)
 
@@ -115,7 +116,7 @@ def ingest_events(
     request: HttpRequest,
     payload: EventsBatchIn,
 ) -> tuple[int, EventsBatchOut]:
-    events_data = [e.dict() for e in payload.events]
+    events_data = [e.model_dump() for e in payload.events]
     batch = process_events_batch(events_data)
     EVENTS_INGESTED.labels(status="accepted").inc(batch.accepted)
     EVENTS_INGESTED.labels(status="duplicate").inc(batch.duplicates)