fix(@angular-devkit/build-angular): use stylePreprocessorOptions

The `stylePreprocessorOptions` were ignored, meaning that `silenceDeprecations`, for example, was not used when building tests.

Author: cexbrayat

packages/angular_devkit/build_angular/src/builders/karma/application_builder.ts

@@ -107,7 +107,6 @@ class AngularAssetsMiddleware {
 }
 
 function injectKarmaReporter(
- context: BuilderContext,
  buildOptions: BuildOptions,
  buildIterator: AsyncIterator<Result>,
  karmaConfig: Config & ConfigOptions,
@@ -207,7 +206,7 @@ export function execute(
  // If `--watch` is explicitly enabled or if we are keeping the Karma
  // process running, we should hook Karma into the build.
  if (buildIterator) {
- injectKarmaReporter(context, buildOptions, buildIterator, karmaConfig, subscriber);
+ injectKarmaReporter(buildOptions, buildIterator, karmaConfig, subscriber);
  }
 
  // Complete the observable once the Karma server returns.
@@ -352,6 +351,7 @@ async function initializeApplication(
  polyfills: normalizePolyfills(options.polyfills),
  webWorkerTsConfig: options.webWorkerTsConfig,
  watch: options.watch ?? !karmaOptions.singleRun,
+ stylePreprocessorOptions: options.stylePreprocessorOptions,
  };
 
  // Build tests with `application` builder, using test files as entry points.