Bug:
Settings for ignorable dialogs were reset during deferred auto-upgrade.

Reason:
In case of deferred upgrade (i.e. when you select "Later...") the defaults for notifications settings are not loaded,
so when the viewer exits after launching the updater, it incorrectly re-saves notifications settings.

Fix:
Initialize settings earlier, so that viewer picks them up in update mode.

See acceptance criteria in the JIRA ticket.