Add more Organisation management options to the Sales Dashboard

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

Team members need to be able to take actions within the sales dashboard without needing full Read/Write access to Django Admin

### Describe the solution you'd like.

Surface the following organisation booleans in the organsiation page of the sales dashboard but do not allow users to change their value:

- ‘stop serving flags’
- ‘block access to admin’

The reason that we don't want these values to be changed is that, in a lot of cases, this could result in them being re-blocked shortly afterwards by the automated process. We should only surface these fields as read-only until we complete [this work](https://github.com/Flagsmith/flagsmith/issues/4537).

### Describe alternatives you've considered

None

### Additional context

_No response_