fix after rebase

Author: sllethe

src/lib/core/theming/_palette.scss

@@ -678,6 +678,7 @@ $mat-dark-theme-background: (
   selected-disabled-button: map_get($mat-grey, 800),
   disabled-button-toggle: map_get($mat-grey, 1000),
   unselected-chip: map_get($mat-grey, 700),
+  disabled-list-option: map_get($mat-grey, 1000),
 );
 
 // Foreground palette for light themes.