fix(router-core): skip descendant lifecycle callbacks

We update the keeps a hidden child matched without projecting it below a parent error test assertion to align with the PR's intended behavior change: descendants below an error/not-found boundary should no longer receive onEnter callbacks. The previous assertion (toHaveBeenCalledTimes(1)) reflected the old traversal behavior where the loop continued through all matches regardless of boundary status; the fix changes it to not.toHaveBeenCalled() to match the new runRouteLifecycle break semantics.