fix(raddy_pt3_poolthermometer): reverse mapping for time format

- 12h/24h mappings were undocumented so a guess was made that was wrong

Issue #6030

custom_components/tuya_local/devices/raddy_pt3_poolthermometer.yaml

@@ -270,9 +270,9 @@ entities:
         type: boolean
         name: option
         mapping:
-          - dps_val: false
-            value: "12_hour"
           - dps_val: true
+            value: "12_hour"
+          - dps_val: false
             value: "24_hour"
   - entity: switch
     name: Date display