* fix(worker): Verify contents of loaded session (#2629)
* fix(worker): Verify contents of loaded session
Previously, it was possible for an empty private key to be used
when the session had no user or project associated with it.
The new checks guarantee that we will fail gracefully in these
cases.
* Check against len instead of nil
* Add CHANGELOG
* fix(session): Always invoke all parts of session cancel trigger
The session cancelation trigger would not set the key_id to null
appropriately if another one of the fields on the session was
already null, since that case statement would be matched first.
The new structure matches all statements, in case any of them have
special logic (such as in the project case).
Johan Brandhorst-Satzkorn
8908dccf6d