fixup! refactor(@angular/ssr): combine redirect URL parameter helpers and use DefaultUrlSerializer

Author: alan-agius4

packages/angular/ssr/src/routes/ng-routes.ts

@@ -179,10 +179,9 @@ async function* handleRoute(options: {
     const parentRoutes = new Map<string, RouteTreeNodeMetadata>();
 
     if (typeof redirectTo === 'string') {
-      let routeSegments: string[] | undefined;
       // Reference the route parameters by their position in the URL (see `buildUrlWithParams`).
       metadata.redirectTo = resolveRedirectTo(parentRoute, route, redirectTo, (parameter) => {
-        routeSegments ??= joinUrlParts(baseHref, currentRoutePath).split('/');
+        const routeSegments = joinUrlParts(baseHref, currentRoutePath).split('/');
 
         return `*${routeSegments.lastIndexOf(parameter)}`;
       });

packages/angular/ssr/src/utils/url.ts

@@ -205,7 +205,7 @@ export function buildUrlWithParams(toUrl: string, fromPath: string, fromSearch?:
         .split('/')
         .map((part, index) =>
           part[0] === '*'
-            ? (fromPathParts[part.length === 1 ? index : +part.slice(1)] ?? part)
+            ? (fromPathParts[part.length === 1 ? index : Number(part.slice(1))] ?? part)
             : part,
         ),
     );