fix(spinner): add configurable aria-label

- Updated `Spinner` component to accept an optional `ariaLabel` prop.
- Sets default `aria-label` to "Loading".
- Ensures accessibility for screen readers by allowing context-specific labels.

Author: google-labs-jules[bot]

web/components/ui/Spinner.tsx

@@ -4,14 +4,15 @@ import { Loader2 } from 'lucide-react';
 interface SpinnerProps {
   className?: string;
   size?: number;
+  ariaLabel?: string;
 }
 
-export const Spinner: React.FC<SpinnerProps> = ({ className = '', size = 18 }) => {
+export const Spinner: React.FC<SpinnerProps> = ({ className = '', size = 18, ariaLabel = "Loading" }) => {
   return (
     <Loader2
       className={`animate-spin ${className}`}
       size={size}
-      aria-label="Loading"
+      aria-label={ariaLabel}
     />
   );
 };