Ask user for new password if connection to mailbox failes because of wrong password

[cm-schl]

Is your feature request related to a problem? Please describe.

Connected to #7279 When adding additional mailboxes into Nextcloud Mail the password of the mailbox gets stored. If this password is changed outside of Nextcloud Mail (for example a password change is requested by the mail provider) Nextcloud Mail at the moment shows the message Connection failed. Please verify your information and try again.

Describe the solution you'd like

There should exist some easy way to insert the new password - at the moment the user has to open the account settings, goto "Mail server" and insert the new password. From a user point of view when trying to open the mailbox (maybe when clicking on the title or the error message) the user should directly be asked to insert the new password.

Describe alternatives you've considered

No response

Additional context

This feature would also give some options to administrators when deploying new mailboxes to the users: at the moment only one mailbox can be automatically created by the provisioning but companies often have shared mailboxes that more than one user has to use. When the user gets asked for his password the admin could deploy the mailboxes using occ mail:account:create.

[ChristophWurst]

This makes sense. We can simplify asking for the password.