Add state_class support to Rest (#58026)

homeassistant/components/rest/binary_sensor.py

@@ -85,14 +85,14 @@ class RestBinarySensor(RestEntity, BinarySensorEntity):
         resource_template,
     ):
         """Initialize a REST binary sensor."""
-        super().__init__(
-            coordinator, rest, name, device_class, resource_template, force_update
-        )
+        super().__init__(coordinator, rest, name, resource_template, force_update)
         self._state = False
         self._previous_data = None
         self._value_template = value_template
         self._is_on = None
 
+        self._attr_device_class = device_class
+
     @property
     def is_on(self):
         """Return true if the binary sensor is on."""