fix: add missing session parameters to controller method calls

- Add db_session parameter to all RoomController.add() and update() calls in test_room_ics_api.py
- Fix TranscriptController.upsert_topic() calls to include session parameter in conftest.py fixture
- Fix TranscriptController.upsert_participant() and delete_participant() calls to include session parameter in API views
- Remove invalid setup_database fixture references, use pytest-async-sqlalchemy's database fixture instead
- Update CalendarEventController.upsert() calls to include session parameter

These changes ensure all controller methods receive the required session parameter
as part of the SQLAlchemy 2.0 migration pattern where sessions are explicitly managed.

server/tests/conftest.py

@@ -402,6 +402,7 @@ async def fake_transcript_with_topics(tmpdir, client, db_session):
 
     # create some topics
     await transcripts_controller.upsert_topic(
+        db_session,
         transcript,
         TranscriptTopic(
             title="Topic 1",
@@ -415,6 +416,7 @@ async def fake_transcript_with_topics(tmpdir, client, db_session):
         ),
     )
     await transcripts_controller.upsert_topic(
+        db_session,
         transcript,
         TranscriptTopic(
             title="Topic 2",