docs: use getRouteHierarchy for breadcrumbs Flow router trail#11918
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Align the breadcrumbs Flow spec, API and tasks with Flow core PR #24550: build the router-mode trail on the public RouteConfiguration#getRouteHierarchy (returning RouteParentReference) and instance-free title resolution, replacing the earlier proposed RouteHierarchy walker. Refer to the Flow PR for API details rather than restating them. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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sissbruecker
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Depends on #11923
Aligns the breadcrumbs Flow spec, API, and tasks with Flow core PR #24550, which ships the route-hierarchy and instance-free-title APIs the router mode needs.
RouteConfiguration#getRouteHierarchy(target, params)(returnsList<RouteParentReference>, root→current, cycle-guarded) instead of the earlier proposedRouteHierarchy.resolveAncestorswalker.@PageTitle/PageTitleGeneratorwithout instantiating views; the current view's liveHasDynamicTitleis still preferred for the last item. Ancestors resolve with theRouteParametersnarrowed to their own template.@RouteParent— now documented as shipping in PR #24550 (staticvalue()+ dynamicresolver()); removed the speculative annotation/algorithm code blocks in favour of a PR reference.@RouteParentdependency subsections collapse into one concise "Flow core: route hierarchy and titles (PR #24550)" dependency note.Discussion entries added/updated for the API change; spec bodies kept current-state-only and defer API detail to the Flow PR.
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