RunGuardsAndResolvers
何时在路由上运行守卫（guard）和解析器（resolver）的策略。
A policy for when to run guards and resolvers on a route.
type RunGuardsAndResolvers = 'pathParamsChange' | 'pathParamsOrQueryParamsChange' | 'paramsChange' | 'paramsOrQueryParamsChange' | 'always' | ((from: ActivatedRouteSnapshot, to: ActivatedRouteSnapshot) => boolean);
