Give the header scrolled colours and equal card heights in 1.11.1

Cards, quotes and call-to-action bands side by side in a row are equal in
height again: the stacking margin meant for a column no longer applies inside
a row. The header can carry a second set of colours for the scrolled page,
the Flatsome transparent header: a "scrolled" state next to "hover", limited
to colours, shadow and opacity, marked by a small script only where it is
used, plus a setting that lets the header float over the first section.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

src/Controller/EditorController.php

@@ -127,6 +127,7 @@ final class EditorController extends AbstractController
             'sides' => StyleSchema::sides(),
             'corners' => StyleSchema::corners(),
             'hoverable' => StyleSchema::hoverable(),
+            'scrollable' => StyleSchema::scrollable(),
             'colors' => $theme['colors'],
             'fonts' => $theme['fonts'],
             'presets' => $theme['presets'],