Customize: Fix auto-expand (and focus) on newly added widgets.

Add widget controls with an initially-true `active` state so that calling `expand()` will not be short-circuited. Previously the `active` state would be set once the preview refreshes, but this happens too late for the `addWidget` call. Fixes regression introduced in [35231].

Fixes #34514.


git-svn-id: https://develop.svn.wordpress.org/trunk@35486 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/js/customize-widgets.js

@@ -2001,7 +2001,8 @@
 					is_new: ! isExistingWidget,
 					width: widget.get( 'width' ),
 					height: widget.get( 'height' ),
-					is_wide: widget.get( 'is_wide' )
+					is_wide: widget.get( 'is_wide' ),
+					active: true
 				},
 				previewer: self.setting.previewer
 			} );