move use_sea init to Session constructor

Signed-off-by: varun-edachali-dbx <varun.edachali@databricks.com>

Author: varun-edachali-dbx

src/databricks/sql/session.py

@@ -76,7 +76,9 @@ def __init__(
             tls_client_cert_key_password=kwargs.get("_tls_client_cert_key_password"),
         )
 
+        self.use_sea = kwargs.get("use_sea", False)
         self.backend = self._create_backend(
+            self.use_sea,
             server_hostname,
             http_path,
             all_headers,
@@ -89,6 +91,7 @@ def __init__(
 
     def _create_backend(
         self,
+        use_sea: bool,
         server_hostname: str,
         http_path: str,
         all_headers: List[Tuple[str, str]],
@@ -97,10 +100,8 @@ def _create_backend(
         kwargs: dict,
     ) -> DatabricksClient:
         """Create and return the appropriate backend client."""
-        self.use_sea = kwargs.get("use_sea", False)
-
         databricks_client_class: Type[DatabricksClient]
-        if self.use_sea:
+        if use_sea:
             logger.debug("Creating SEA backend client")
             databricks_client_class = SeaDatabricksClient
         else: