The class edit page hung/looped because ClassSessionsSection.vue still
referenced a removed todayJalali() helper in the template, which threw a
render error on every reactive update. Switch both usages to the
getTodayJalali() composable function.
Also remove the duplicate "اطلاعرسانی برگزاری جلسه" notify button/dialog
from SessionListView.vue since the same action already exists per-session
inside the class edit page.