feat(pageframe): adopt `TopBar.Slot` in `Layout.Title` #248653

Job	Run time
detect what files changed	13s
api url typescript generation	0s
cli test	0s
select tests	0s
backend typing	0s
api docs test	0s
monolith-dbs test	0s
requirements check	0s
backend migration tests	0s
check migration	0s
calculate test shards	0s
backend test	0s
Backend	2s
	15s

Provide feedback