Share button from space team calendar page will not send notifications.

Issue Summary

When using the share button from a space team calendar page, notifications will not be sent unless a global admin user is sending them.

This is reproducible on Data Center: (yes)

Steps to Reproduce

1. Create a calendar and go to the space view and then click on calendars view.
2. Make sure that a mail server is configured or the share button will not be visible.
3. Share the page

Expected Results

Notification is sent.

Actual Results

Notification is not sent.

And nothing is visible in logs.

Workaround

Click on a sub-calendar and then share the page. This should work for all users.