Sign out not invalidating sessions on ios

[Pokeylooted]

Summary:

If a users account password is changed, email is changed or disabled etc. Canvas on iPhone will not sign out the user, they'll never be prompted to put in new password and will stay signed in.

Steps to reproduce:

1. Log in to the account on iPhone Canvas
2. Change the users password/disable etc.
3. Check iPhone app

Expected behavior:

To be signed out whenever this information is changed similar to how the website works.

Actual behavior:

Doesn't sign out and keeps working forever