Add mock for listen in Teslemetry tests (#148853)

tests/components/teslemetry/conftest.py

@@ -119,8 +119,17 @@ def mock_energy_history():
 
 
 @pytest.fixture(autouse=True)
-def mock_add_listener():
+def mock_stream_listen():
     """Mock Teslemetry Stream listen method."""
+    with patch(
+        "teslemetry_stream.TeslemetryStream.listen",
+    ) as mock_stream_listen:
+        yield mock_stream_listen
+
+
+@pytest.fixture(autouse=True)
+def mock_add_listener():
+    """Mock Teslemetry Stream add listener method."""
     with patch(
         "teslemetry_stream.TeslemetryStream.async_add_listener",
     ) as mock_add_listener: