[Enhancement]: Update Card - Fallback to icon if entity_picture attribute doesn't exist

[theone11]

Requirements

• [X] I have updated Mushroom to the latest available version
• [X] I did a search to see if there is a similar issue or if a pull request is open.

Is your feature request related to a problem?

Some update entities do not have an attirbute entity_picture to use when icon_type is defined as entity-picture.

Describe the solution you'd like

If no entity-picture attribute found (no attribute defined) for the update entity then fallback and use the defined icon in the card's settings.

Describe alternatives you've considered

No response

Additional context

No response