Afyeev 16A EV charger: sensor needs sensor dp

PR #2453 (had conflicts, so changes made manually)

custom_components/tuya_local/devices/afyeev_16a_evcharger.yaml

@@ -83,7 +83,7 @@ secondary_entities:
     dps:
       - id: 6
         type: base64
-        name: phase_a
+        name: sensor
         optional: true
         unit: kW
         class: measurement