Guard in register_node() instead

Author: bouwew

plugwise_usb/network/__init__.py

@@ -148,6 +148,9 @@ def registry(self) -> dict[int, tuple[str, NodeType | None]]:
 
     async def register_node(self, mac: str) -> bool:
         """Register node to Plugwise network."""
+        if not self.accept_join_request:
+            return
+
         try:
             if (address := await self._register.register_node(mac)):
                 return await self._discover_node(address, mac, None)