Description

When you edit global styles (example picking a style variation) in the "styles" page of the site editor and navigating to the page editor (pages in the site editor) without saving, the global styles changes are not reflected in the canvas.

Step-by-step reproduction instructions

1- Go the site editor
2- Go to "styles"
3- Pick a style variation (any) in the "browse styles" menu
4- Navigate to pages
5- Notice that the style variation that you picked is not used in the "preview/editor"

If you try opening the global styles panel within the editor, you'll notice that the change is actually applied in the panel, but it's not reflected, you'll have to "trigger" the modification again to see it reflected.

Expected behaviour

The editor should use the "edited global styles" entity and always reflect whatever changes we make (even without saving)