The globalblock API allows callers to globally block in a similar way to the Special:GlobalBlock page. Therefore, in-line with T371693, the API should also support optionally disabling account creation.
To ensure that existing users of the API are not negatively affected, we should ensure that the default is to disable account creation.
Acceptance criteria
- Update the globalblocks API to allow callers to optionally disable account creation (instead of always disabling account creation)