feat(siguro_apk50_purifier): make compatible with AP-D200W

PR #6305 by @kkoudelka

custom_components/tuya_local/devices/siguro_apk50_purifier.yaml

@@ -4,6 +4,10 @@ products:
     manufacturer: Siguro
     model: Air Master
     model_id: AP-K50
+  - id: 57rwsy9izugk0ts7
+    manufacturer: Siguro
+    model: Auk WiFi
+    model_id: AP-D400W
 entities:
   - entity: fan
     translation_key: air_purifier
@@ -147,6 +151,7 @@ entities:
     dps:
       - id: 23
         type: string
+        optional: true
         name: option
         mapping:
           - dps_val: c