test: use loopback host for trigger routes

Author: petrmarinec

src/google/adk/cli/fast_api.py

@@ -42,6 +42,7 @@
 from .adk_web_server import AdkWebServer
 from .api_server import ApiServer
 from .api_server import _is_loopback_host
+from .dev_server import DevServer
 from .service_registry import load_services_module
 from .utils import envs
 from .utils.agent_change_handler import AgentChangeEventHandler

tests/unittests/cli/test_trigger_routes.py

@@ -249,7 +249,7 @@ def _make_test_client(
         allow_origins=["*"],
         trigger_sources=trigger_sources,
     )
-    return TestClient(app)
+    return TestClient(app, base_url="http://127.0.0.1")
 
 
 @pytest.fixture