allow Any values in session_conf, cast to String as done in Thrift backend

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

Author: varun-edachali-dbx

src/databricks/sql/backend/sea/backend.py

@@ -3,7 +3,7 @@
 import logging
 import time
 import re
-from typing import Dict, Tuple, List, Optional, Union, TYPE_CHECKING, Set
+from typing import Any, Dict, Tuple, List, Optional, Union, TYPE_CHECKING, Set
 
 from databricks.sql.backend.sea.models.base import ExternalLink, ResultManifest
 from databricks.sql.backend.sea.utils.constants import (
@@ -49,7 +49,7 @@
 
 
 def _filter_session_configuration(
-    session_configuration: Optional[Dict[str, str]]
+    session_configuration: Optional[Dict[str, Any]]
 ) -> Optional[Dict[str, str]]:
     if not session_configuration:
         return None
@@ -59,7 +59,7 @@ def _filter_session_configuration(
 
     for key, value in session_configuration.items():
         if key.upper() in ALLOWED_SESSION_CONF_TO_DEFAULT_VALUES_MAP:
-            filtered_session_configuration[key.lower()] = value
+            filtered_session_configuration[key.lower()] = str(value)
         else:
             ignored_configs.add(key)
 
@@ -183,7 +183,7 @@ def max_download_threads(self) -> int:
 
     def open_session(
         self,
-        session_configuration: Optional[Dict[str, str]],
+        session_configuration: Optional[Dict[str, Any]],
         catalog: Optional[str],
         schema: Optional[str],
     ) -> SessionId: