ikea_e2001_e2002: handle "unknown" state

Since the update to HA2024.10, the state of my zigbee2mqqt linked Stybar becomes "unknown" instead of "None"


UI of stybar before the update:
- changed to None 00:24:55 - 23 hours ago
- changed to arrow_right_click 00:24:55 - 23 hours ago
- changed to None 00:24:55 - 23 hours ago

now the same event looks like:
- became unknown 23:52:22 - 3 minutes ago
- changed to arrow_right_click 23:52:22 - 3 minutes ago
- became unknown 23:52:21 - 3 minutes ago

blueprints/controllers/ikea_e2001_e2002/ikea_e2001_e2002.yaml

@@ -382,7 +382,7 @@ condition:
         {{ trigger.event.data.command }}{{"_" if trigger.event.data.args|length > 0}}{{ trigger.event.data.args|join("_") }}
         {%- endif -%}
         {%- endset -%}
-        {{ trigger_action not in ["","None"] }}
+        {{ trigger_action not in ["","None","unknown"] }}
       # only for zigbee2mqtt, check if the event is relative to a real state change, and not only some minor changes in the sensor attributes
       # this is required since multiple state_changed events are fired for a single button press, with the result of the automation being triggered multiple times
       - '{{ integration_id != "zigbee2mqtt" or trigger.event.data.new_state.state != trigger.event.data.old_state.state }}'