Add static variable hashCheck to LwDecoLHT65 class (#25034)

Added a static variable 'hashCheck' to the LwDecoLHT65 class.

tasmota/berry/lorawan/decoders/vendors/dragino/LHT65.be

@@ -12,6 +12,8 @@ if !global.lht65Nodes      # data survive to decoder reload
 end
 
 class LwDecoLHT65
+  static var hashCheck = false
+
   static def decodeUplink(Name, Node, RSSI, FPort, Bytes)
     var data = {"Device":"Dragino LHT65"}
 
@@ -198,4 +200,4 @@ class LwDecoLHT65
   end #add_web_sensor()
 end # class
 
-LwDeco = LwDecoLHT65
+LwDeco = LwDecoLHT65