fix(router): reset internal state on error handler redirect after state commit - #71130
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…te commit When an error occurs after `BeforeActivateRoutes` has already committed `targetRouterState` and `withNavigationErrorHandler` returns a `RedirectCommand`, the transition emits a redirecting `NavigationCancel` instead of `NavigationError`. Previously, `StateManager` skipped resetting internal state on all redirecting cancellations because redirects from guards and resolvers happen prior to `BeforeActivateRoutes`. This left the uncommitted or half-activated `targetRouterState` (whose unactivated routes do not yet have `snapshot` assigned) as the current `routerState` for the subsequent redirect navigation. This change resets internal state if a redirecting cancellation occurs after `targetRouterState` was already committed. Fixes angular#71126
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When an error occurs after
BeforeActivateRouteshas already committedtargetRouterStateandwithNavigationErrorHandlerreturns aRedirectCommand, the transition emits a redirectingNavigationCancelinstead ofNavigationError. Previously,StateManagerskipped resetting internal state on all redirecting cancellations because redirects from guards and resolvers happen prior toBeforeActivateRoutes. This left the half-activatedtargetRouterState(whose unactivated routes do not yet havesnapshotassigned) as the currentrouterStatefor the subsequent redirect navigation.This change resets internal state if a redirecting cancellation occurs after
targetRouterStatewas already committed.Fixes #71126