Change session name

This device only reports at the end of the session so I changed it to "last session energy"

custom_components/tuya_local/devices/nine_ev_charger.yaml

@@ -243,7 +243,7 @@ secondary_entities:
           min: 1
           max: 1440
   - entity: sensor
-    name: Charge energy
+    name: Last session energy
     class: energy_storage
     dps:
       - id: 25  # charge_energy_once