fix(dowell_dchs-k7_32_7kw_ev_charger): fix accidentally deleted dp name

custom_components/tuya_local/devices/dowell_dchs-k7_32_7kw_ev_charger.yaml

@@ -451,6 +451,7 @@ entities:
       - id: 16    # clear_energy
         type: boolean
         optional: true
+        name: button
   - entity: button
     name: Refresh
     icon: "mdi:sync"