fix(ui): improve disabled Switch styling

Add proper visual feedback for disabled Switch component by
applying `not-allowed` cursor and disabled text color.

Signed-off-by: Johan Persson <johanopersson@gmail.com>

.changeset/twenty-clubs-itch.md

@@ -0,0 +1,7 @@
+---
+'@backstage/ui': patch
+---
+
+Fixed Switch component disabled state styling to show `not-allowed` cursor and disabled text color.
+
+**Affected components:** Switch

packages/ui/src/components/Switch/Switch.module.css

@@ -27,6 +27,11 @@
     color: var(--bui-fg-primary);
     cursor: pointer;
 
+    &[data-disabled] {
+      cursor: not-allowed;
+      color: var(--bui-fg-disabled);
+    }
+
     &[data-pressed] .bui-SwitchIndicator {
       &:before {
         background: var(--bui-fg-solid);