Optional password/PIN protection for shared document links

Description Currently, the document sharing feature allows generating a public link that provides direct access to the document. While this is very convenient, it may not always be suitable for sensitive documents. It would be useful to have an optional password or PIN protection for shared links so that users who possess the link must also enter a password before they can view the document. This would add an extra layer of security when sharing documents externally. --- Proposed Feature Add an option when creating a share link that allows the user to define a password or PIN. Proposed behavior: 1. User creates a share link for a document. 2. User can optionally define: - Password or PIN - (Optional) expiration date (already exists) 3. When someone opens the link: - They are prompted to enter the password/PIN. 4. Only after successful authentication can the document be accessed. --- Example Use Cases • Sharing invoices or contracts…