fix(service-worker): deprecate versionedFiles in asset-group resources (#23584)

Since `versionedFiles` behaves in the exact same way as `files`, there
is no reaason to have both. Users should use `files` instead.

This commit deprecates the property and prints a warning when coming
across an asset-group that uses it. It should be completely removed in
a future version.

Note, it has also been removed from the default `ngsw-config.json`
template in angular/devkit#754.

PR Close #23584

tools/public_api_guard/service-worker/config.d.ts

@@ -4,7 +4,7 @@ export interface AssetGroup {
     name: string;
     resources: {
         files?: Glob[];
-        versionedFiles?: Glob[];
+        /** @deprecated */ versionedFiles?: Glob[];
         urls?: Glob[];
     };
     updateMode?: 'prefetch' | 'lazy';