(bug): Add new icon to minds.org and display as SEO image.

Summary

This task was created by @jotto141 in Asana.

Jack said "Post https://minds.org and the image thumbnail does not render."

Steps to reproduce

1. Visit your channel.
2. Paste https://minds.org in the create post input field.
3. Click "POST".

Platform information

Chrome/Win10

What is the current bug behavior?

No featured image is displayed in the link preview.

What is the expected correct behavior?

The the featured image for the link preview should be the lightbulb.

Relevant logs and/or screenshots

Possible fixes

(If you can, link to the line of code that might be responsible for the problem)