Is your feature request related to a problem? Please describe.
I'm using rss bridge for a custom feed and it has the option to return an URL to icon for the feed. However it looks like FreshRSS ignores the field and pulls from the Website URL which in this case doesn't have a valid favicon.

Describe the solution you’d like
It would be nice if it would look for an icon field before trying to pull it from the website URL.