Allow Default action for icons

[nbJosh]

Is there an existing feature request for this?

• I have searched the existing issues

Your feature request

I have been trying to write this and get it to work all night,

Hulu:
    title: "Hulu"
    widget_type: icon
    entity: sensor.nowplayingappletv
    widget_style: "background: #001f50;"
    state_text: ""
    widget_style: "background: #001f50;"
    icons:
        "Hulu":
            icon: mdi-hulu
            style: "color: #00e000"
        "default":
            style: "color: grey"
            icon: mdi-hulu
            post_service_active:
                service: homeassistant/turn_on
                entity_id: script.huluonappletv

However, I have found that post_service_active: is not called for the "default" condition!
is this a bug? or a feature request?