UFAL/Share submission by email is not working for a user

[milanmajchrak]

Problem description

The user cannot Take a submission by a link.
Reason: The user is not authorized to do that, because the BE endpoint is not receiving the workspaceitem id, so it cannot authorize user to take that submission.
Solution: Send the workspaceitemid from the FE. That id must be added to the share url.

[milanmajchrak]

Problem:
The submission cannot be shared with a custom user; it currently only works for the admin.

Solution:
The SuggestionRestController needs to receive the workspaceItemId from the frontend. First, this ID should be sent to the email URL, where it can be used to retrieve the workspaceItemId (wsId) for further processing.