Change default behaviour to hashCeck = disabled (#25037)

* Add support for LoRaWAN sensor discovery for Home Assistant

See https://github.com/arendst/Tasmota/discussions/24398#discussioncomment-15649631

* Introduce hashCheck to LwDecoDrgD20

Add hashCheck variable to LwDecoDrgD20 class.

tasmota/berry/lorawan/decoders/vendors/dragino/D20.be

@@ -11,6 +11,8 @@ if !global.DrgD20Nodes      # data survive to decoder reload
 end
 
 class LwDecoDrgD20
+  static var hashCheck = false
+
   static def decodeUplink(Name, Node, RSSI, FPort, Bytes)
     var data = {"Device":"Dragino D20"}