Fix heat pump with one input dtos

Author: Bachibouzouk

app/projects/dtos.py

@@ -485,7 +485,7 @@ def convert_to_dto(scenario: Scenario):
                     efficiency = np.array(cop).tolist()
                 else:
                     efficiency = cop
-                inflow_direction = input_mapping
+                inflow_direction.append(input_connection.get().bus.name)
                 efficiencies.append(efficiency)
             else:
                 for energy_vector in ["Electricity", "Heat"]: