Allow group owners to disable 2FA for individual Enterprise users
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### Proposal
For top-level group owners (future Workspace admin), provide a "Disable 2FA" button to remove 2FA for specific users.
These Owners should be able to disable 2FA for any Enterprise users within the group.

Most likely, the best place to put it is with other user management pieces such as gitlab#300184 , possibly similar to https://gitlab.com/gitlab-org/gitlab/-/issues/227841#note_1028089554
##### Visuals
| disable behavior in self managed | update modal | Current table view of Group members | proposed change to Group members screen |
| ------ | ------ | ------ | ------ |
|  |  |  |  |
##### Modal text:
`This will remove two-factor authentication (2FA) on this account. You should enable 2FA to secure your account.`
epic