arlec 6-speed fan: speed is a string, map string values.

Probably not strictly necessary, but for completeness.

custom_components/tuya_local/devices/arlec_6speed_fan.yaml

@@ -33,17 +33,17 @@ primary_entity:
       name: speed
       type: string
       mapping:
-        - dps_val: 1
+        - dps_val: "1"
           value: 17
-        - dps_val: 2
+        - dps_val: "2"
           value: 33
-        - dps_val: 3
+        - dps_val: "3"
           value: 50
-        - dps_val: 4
+        - dps_val: "4"
           value: 67
-        - dps_val: 5
+        - dps_val: "5"
           value: 83
-        - dps_val: 6
+        - dps_val: "6"
           value: 100
     - id: 101
       type: boolean