Owner and admin should not be able to add members

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Feature request

Which Nextcloud Version are you currently using: 33

Is your feature request related to a problem? Please describe.
Since groups are read only. Creating a Teams add possibility to link calendars, deck and so on.

Describe the solution you'd like
Either a solution that locks the team so that owner/admin cant add new members or that groups that now are read only works the same as teams, but you cant add users to it.

Describe alternatives you've considered

Additional context
Inb this case we are working with projects that demands a higher security within projects. You want someone to manage a project/team but not add new users to it.

Start by reviewing how circles handle team and group membership permissions, focusing on the checks used when adding members. Clarify whether the intended restriction applies to owners, administrators, or both, then verify that restricted users cannot add members while allowed management actions still work.