allow using empty local_sufix

Author: sergeykuprikov

dbt/adapters/clickhouse/impl.py

@@ -130,6 +130,7 @@ def get_clickhouse_local_suffix(self):
             if suffix.startswith('_'):
                 return f'{suffix}'
             return f'_{suffix}'
+        return ''
 
     @available.parse(lambda *a, **k: {})
     def get_clickhouse_local_db_prefix(self):