Fix zwave_js device re-interview (#78046)

* Handle stale node and entity info on re-interview

* Add test

* Unsubscribe on config entry unload

homeassistant/components/zwave_js/update.py

@@ -189,6 +189,14 @@ class ZWaveNodeFirmwareUpdate(UpdateEntity):
             )
         )
 
+        self.async_on_remove(
+            async_dispatcher_connect(
+                self.hass,
+                f"{DOMAIN}_{self._base_unique_id}_remove_entity_on_ready_node",
+                self.async_remove,
+            )
+        )
+
         self.async_on_remove(async_at_start(self.hass, self._async_update))
 
     async def async_will_remove_from_hass(self) -> None: