clean database session before initializing a new one

Author: MaxNumerique

src/opengeodeweb_viewer/rpc/utils_protocols.py

@@ -50,5 +50,13 @@ def resetProject(self, rpc_params: dict | None = None) -> None:
 
         self.get_data_base().clear()
 
+        # Clean up any existing database session
+        if connection.scoped_session_registry is not None:
+            connection.scoped_session_registry.remove()
+        if connection.engine is not None:
+            connection.engine.dispose()
+        # Reset all connection attributes to None
+        connection.engine = connection.session_factory = connection.scoped_session_registry = None
+
         db_full_path = os.path.join(self.DATA_FOLDER_PATH, "project.db")
         connection.init_database(db_full_path, create_tables=False)