Allow setting default preview for HTML blocks

[Gierand]

What problem does this address?

It is not possible to set the default state to preview mode for HTML blocks.

What is your proposed solution?

As we begin to brand our WordPress site within the FSE area of WordPress, it would be nice if the HTML blocks had a “mode” option to default its initial state to preview, rather than edit mode. This way we can get a “proper” visual of the site as we see it in FSE. Clicking preview mode on an HTML block every single time we are in FSE begins to become a distraction.

[Evakos]

I noticed that setting the HTML block to preview doesn't work anyway. In my case I had added Font Awesome icons like this: and also a . However converting it to a block does allow the preview although you have to then override the styling of .wp-block-code. So a temporary solution appears to be converting the block.

[mauteri]

I put in a PR to make this change here: #46834

[wilnau-design]

+1

[daviedR]

+1