Moes RGB socket: make timer optional.

Issue #676 has the same device, but does not match because there is no timer
dp in the data.  Making the timer optional lets it match.

custom_components/tuya_local/devices/moes_rgb_socket.yaml

@@ -82,6 +82,7 @@ secondary_entities:
       - id: 102
         type: integer
         name: value
+        optional: true
         unit: min
         range:
           min: 0