Merge pull request #6820 from matrix-org/rav/get_room_version_id

changelog.d/6820.misc

synapse/api/errors.py

synapse/federation/federation_client.py

synapse/federation/federation_server.py

synapse/handlers/federation.py

synapse/handlers/message.py

synapse/handlers/pagination.py

synapse/handlers/room.py

synapse/state/__init__.py

synapse/storage/data_stores/main/state.py

synapse/storage/persist_events.py

tests/handlers/test_presence.py

tests/test_state.py

tests/unittest.py