Editing default alias requires re-entering IMAP/SMTP password

Expected behavior

An account's default alias should be editable like any secondary aliases.

When editing the server settings, the IMAP/SMTP passwords should not be required unless being changed themselves.

Actual behavior

Pressing the edit button scrolls you down to the IMAP/SMTP server settings section where the account name and email address are specified. The IMAP/SMTP password fields are left blank, but are required to save changes here.

This is a pain if you're using app-specific passwords with your email provider, as you have to go and generate a fresh password just to change your alias.

Mail app

Mail app version: 1.9.5

Mailserver or service: any

Server configuration

Operating system: Arch Linux

Web server: nginx

Database: PostgreSQL

PHP version: 8.0

Nextcloud Version: 21.0.1

Client configuration

Browser: Firefox 89

Operating system: Windows 10

No file, test, or entry point is named in the report. Trace the default-alias edit flow into the server settings validation, then verify that changing only the alias saves without IMAP/SMTP passwords while password changes still require them.