[FIX] test_http: missing import

Fine-tunning of da8def8

closes odoo/odoo#92775

Signed-off-by: Julien Castiaux <juc@odoo.com>

odoo/addons/test_http/tests/__init__.py

@@ -4,5 +4,6 @@ from . import test_error
 from . import test_greeting
 from . import test_misc
 from . import test_models
+from . import test_session
 from . import test_static
 from . import test_web_server