Make attribute error message more readable

[fugazzy]

Checklist

• [X] I have filled out the template to the best of my ability.
• [X] This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
• [X] This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

Currently I cannot display the error message in a tile card as attribute as the text is too long.

Describe the solution you'd like

I would love to see just the message without "message:" in the front (message: Wartung fällig ---> Wartung fällig)

Describe alternatives you've considered

extra template sensor should not be necessary.

Additional context

none