Annoying Slack Link Preview

I want a setting that enable to choose small link preview as the default for each Slack channels.

In Slack, GitHub App’s link previews are polite, but it’s also annoying. It can be long enough to cover the screen of the window. When I paste two pull request links in a message, we can see small link previews. It shows only the title, but that is enough and useful for us.
Now, we have two choices, show or mute the rich preview. However, it is inconvenient to mute it completely. Then, I want another setting that makes small link preview the default for link preview.

Thank you.