Update ViewLocationCard to use new combined proof download route

Changed proof of payment download link from old route structure
/share/proof-of-payment/[id]/ to new structure
/share/proof-of-payment/combined/[id]/

This aligns with the reorganized route structure that separates
combined and per-bill proof of payment downloads.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/ui/ViewLocationCard.tsx

@@ -186,7 +186,7 @@ export const ViewLocationCard: FC<ViewLocationCardProps> = ({ location, userSett
                                 attachmentFilename ? (
                                     <div className="mt-3 ml-[-.5rem]">
                                         <Link
-                                            href={`/share/proof-of-payment/${_id}/`}
+                                            href={`/share/proof-of-payment/combined/${_id}/`}
                                             target="_blank"
                                             className='text-center w-full max-w-[20rem] text-nowrap truncate inline-block'
                                         >