fix(actionbutton): fix S1 actionbutton disabled background color

Author: marissahuysentruyt

components/actionbutton/themes/spectrum.css

@@ -21,7 +21,7 @@
 		--spectrum-actionbutton-background-color-hover: var(--spectrum-gray-200);
 		--spectrum-actionbutton-background-color-down: var(--spectrum-gray-300);
 		--spectrum-actionbutton-background-color-focus: var(--spectrum-gray-200);
-		--spectrum-actionbutton-background-color-selected-disabled: var(--spectrum-transparent-black-200);
+		--spectrum-actionbutton-background-color-disabled: var(--spectrum-disabled-background-color);
 
 		--spectrum-actionbutton-content-color-selected: var(--spectrum-gray-75);