Journal manager to press manager navigation

Currently, staff can navigate from the press manager to the journal manager on the backend, but they cannot easily navigate back. You can only navigate through the frontend (web browser) or by editing the URL. This is not very user-friendly and less tech savvy press level staff struggle with this.

Describe the solution you'd like
A navigation option / button for users with staff permissions to easily navigate back to the press manager dashboard.

Additional context
May need to think about permissions / how to include this / where to display it. Linking it to the 'Staff' status would be good and potentially making it part of the left-hand menubar (under 'manager'?). May also need to think about instances where a press only has one journal + domain VS path mode.

@Astronaut-resting If you have relevant comments, feel free to feed in :)

Start by tracing the backend navigation between the journal manager and press manager, including the staff permission checks and the journal domain/path-mode cases mentioned in the issue. Identify where the manager menu is rendered and how the existing reverse navigation works. Done means eligible staff can reach the press manager dashboard from the journal manager without editing the URL, while users without permission cannot.