Allow to ignore admins accounts when setting the "Number of login attempts before the user account will be disabled" setting

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Feature request

Which Nextcloud Version are you currently using: (see administration page) 32.0.6

Is your feature request related to a problem? Please describe.
Since the "Number of login attempts before the user account will be disabled until manual action is taken" setting also applies to admin accounts, we can end up in a situation where the only possible way to reactivate accounts is through occ or database.

Describe the solution you'd like
It would be nice to allow excluding admins from this settings (maybe by default) ? A simple checkbox should do it.

Describe alternatives you've considered
N/A

Additional context

Start from the existing “Number of login attempts before the user account will be disabled” setting and its login-attempt handling; the issue does not name files or tests. Compare the web setting with the occ and database recovery paths described, and consider the work done when an administrator can configure whether admin accounts are exempt and verify the resulting lockout behavior.