refactor(service-worker): move asset URL normalization to Adapter (#37922)

This is in preparation of enabling the ServiceWorker to handle
relative paths in `ngsw.json` (as discussed in #25055), which will
require normalizing URLs in other parts of the ServiceWorker.

PR Close #37922

packages/service-worker/worker/main.ts

@@ -12,5 +12,5 @@ import {Driver} from './src/driver';
 
 const scope = self as any as ServiceWorkerGlobalScope;
 
-const adapter = new Adapter(scope);
+const adapter = new Adapter(scope.registration.scope);
 const driver = new Driver(scope, adapter, new CacheDatabase(scope, adapter));