style: Move import statement to top of file in VSCode tests

Remove redundant import from method body

Co-authored-by: JoJoJoJoJoJoJo <23650418+JoJoJoJoJoJoJo@users.noreply.github.com>

Author: Copilot

tests/test_clients/test_vscode.py

@@ -301,8 +301,6 @@ def test_load_invalid_config(self):
 
     def test_load_config_without_file(self):
         """Test loading config when file doesn't exist"""
-        import tempfile
-
         nonexistent_path = os.path.join(tempfile.gettempdir(), "nonexistent-vscode-config.json")
         manager = VSCodeManager(config_path_override=nonexistent_path)
         config = manager._load_config()