fix: call logout request on logout

[Dadadah]

On logout, call the logout function which deletes the session.

Fixes #910

How was this PR tested?

Logged out and observed session being deleted.

Checklist:

• I have carefully read the contributing guidelines
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation if applicable
• I have no unrelated changes in the PR
• I have confirmed that any new dependencies are strictly necessary
• I have written tests for new code (if applicable)
• I have followed naming conventions/patterns in the surrounding code

Please declare, if any, LLM usage involved in creating this PR

None

[Pecacheu]

I'll have to double-check the implications this will have on #1217 since that also messes with the logout function but doesn't fully log out (nor unsubscribe from push) so that accounts can be switched back and forth.

May cause a merge conflict but it should be easy to fix.

[Pecacheu]

K tested w/ multiuser PR, small conflict as predicted but easy to fix and it still works (only unsubscribes from push when logging out and not switching users)

[Dadadah]

Waiting for v0.8.0 to release before merging.