Styles coming from __experimentalStyles are not enqueued in the post editor for themes without theme.json #46818
Description
Raised at #45731
Steps to reproduce:
- Activate the TwentyTwenty theme.
- Load the post editor.
- Add a pullquote block.
- Search for
.editor-styles-wrapper .wp-block-pullquote.
The expected behavior is that there should be a style rule containing the font size and line height defined in the __experimentalStyle of the pullquote block embedded into the HTML document. However, that style rule is not present.