Only GcalCalendarComboRow, GcalAttendeesSection, and GcalRemindersSection
remain unfocusable on read-only events.
In the case of GcalRemindersSection, we eventually want to allow setting
reminders regardless of the writable state of the event; however, since
dialog is centered around the assumption that a read-only event should
never be edited, which includes reminders, these changes will have to be
done in a separate merge request.
Closes: <https://gitlab.gnome.org/GNOME/gnome-calendar/-/work_items/737>
Part-of: <https://gitlab.gnome.org/GNOME/gnome-calendar/-/merge_requests/499>
Hari Rana
b051c30e1b