fix(@angular-devkit/build-angular): add whatwg-url to downlevel exclusion list

Similar to #21739, `whatwg-url` seems to suffer from the same issue as #21735

```ts
const AsyncIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(async function* () {}).prototype);
```

(cherry picked from commit 1842bd5)

Author: alan-agius4

packages/angular_devkit/build_angular/src/webpack/configs/common.ts

@@ -383,7 +383,9 @@ export async function getCommonConfig(wco: WebpackConfigOptions): Promise<Config
           test: /\.[cm]?[tj]sx?$/,
           // The below is needed due to a bug in `@babel/runtime`. See: https://github.com/babel/babel/issues/12824
           resolve: { fullySpecified: false },
-          exclude: [/[/\\](?:core-js|@babel|tslib|web-animations-js|web-streams-polyfill)[/\\]/],
+          exclude: [
+            /[/\\](?:core-js|@babel|tslib|web-animations-js|web-streams-polyfill|whatwg-url)[/\\]/,
+          ],
           use: [
             {
               loader: require.resolve('../../babel/webpack-loader'),