Session admin's user story filter affects the filter of the members

[Dan1elBox]

To Reproduce
Steps to reproduce the behavior:

1. Create an User Story Mode session and add user stories if none are present yet
2. Enter the session with a member
3. Start Planning
4. As a session admin, filter your user stories and observe how the user stories of the members are also filtered

Expected behavior
The filtering function should be exclusive to each member/admin and should not synchronize with others