DT-779: show update notifications on startup (Core22)
requested to merge sergio-costas/gnome-software:DT-779-always-show-update-notifications-in-snap-store-after-rebooting-core22 into snap-store-41-core22
Currently, snap-store remembers if it has shown a notification for an specific update. This means that if the user closes the notification, it won't be remembered that there are pending updates.
This patch resets the timestamps during launch to ensure that, after login, the user will always be notified if there are pending updates.