fix: disabled color set when no-content-styling enabled

Author: SpyZzey

src/internal/components/selectable-item/styles.scss

@@ -125,6 +125,9 @@
       color: awsui.$color-text-dropdown-item-dimmed;
       border-color: awsui.$color-border-dropdown-item-dimmed-hover;
       background-color: awsui.$color-background-dropdown-item-dimmed;
+      &.no-content-styling {
+        color: inherit;
+      }
     }
     &.is-keyboard {
       border-color: awsui.$color-border-dropdown-item-focused;