Callout without icons should have a class

[Mapaor]

Would be great to have callout icons described by classes like "callout-icon" instead of "notion-page-icon-inline". To be able to style them differently from page icons.

Would also be great to detect when a callout has no icon (which is a relatively new Notion feature).

That was would be as simple as adding a new CSS rule like:

.callout-icon-false {
  visibility: hidden;
  width: 0;
}

Because right now callouts without icon look really bad and there is no easy way to fix them as there is no class assigned to them.