Repository navigation

feat(spec/ui): export navItemVisibleDataNeedsDataSource, so a mirror of NavigationItemSchema attaches it by identifier #47752

Job	Run time
Lint · scoped · slot lookup & corpus	4m 2s
Lint · ESLint	3m 55s
Type Check · source gates	3m 46s
Lint · scoped · query-options erasure	3m 11s
Type Check · workspace	15m 22s
Lint · scoped · tooling self-tests	1m 20s
Lint · docs & code guards	4m 37s
Type Check · consumer gates	11m 24s
Lint · repo & tooling gates	4m 56s
Type Check · debt ledger	5m 38s
Lint · CI, release & engine gates	4m 27s
Lint · PM dispatch-gates	53s
Lint & Repo Gates	5s
TypeScript Type Check	2s
	1h 3m 38s