fix(zen35): force sensor refresh after button 4 REST calls

Without this, the sensor holds stale state for up to scan_interval
seconds, causing consecutive button 4 presses to read the old
enabled/disabled state and toggle the wrong direction.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: TheRealPiotrP

blueprints/automation/zooz_zen35_powerview/zooz_zen35_powerview.yaml

@@ -390,6 +390,9 @@ action:
                     hub: "{{ hub_url }}"
                     id: "{{ repeat.item }}"
                     enabled: "{{ new_opted_in | lower }}"
+          - service: homeassistant.update_entity
+            target:
+              entity_id: sensor.powerview_scheduled_events
           - service: zwave_js.set_config_parameter
             target:
               device_id: "{{ device_id }}"