Builds the theme-toggle button for one layout.
The two variants differ in markup and class names, not in behaviour — both end up calling the same toggle. Kept as one function so the two cannot drift apart.
Which layout the button is for.
The button, not yet attached.
Builds the theme-toggle button for one layout.
The two variants differ in markup and class names, not in behaviour — both end up calling the same toggle. Kept as one function so the two cannot drift apart.