feat(@angular-devkit/build-angular): enable webpack Trusted Types support

As reported in #20113, webpack triggers a Trusted Types violation when
lazy-loading is used. To mitigate that, enable webpack's Trusted Types
module (introduced in webpack/webpack#9856) using 'angular#bundler' as
the policy name.

Author: bjarkler

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

@@ -87,6 +87,7 @@ export function getBrowserConfig(wco: WebpackConfigOptions): webpack.Configurati
         : 'web',
     output: {
       crossOriginLoading,
+      trustedTypes: 'angular#bundler',
     },
     optimization: {
       runtimeChunk: 'single',