Update ikea_e1743.yaml

[Balsvik]

Changes the trigger_delta and last_controller event code as per Rufu's suggestion:

https://community.home-assistant.io/t/zha-deconz-zigbee2mqtt-ikea-e1743-on-off-switch-dimmer-universal-blueprint-all-actions-double-click-events-control-lights-media-players-and-more-with-hooks/277861/137

I've tried it locally, works perfect.

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[NeverUsedID]

Thanks a lot. needed that.