fix(@angular-devkit/build-angular): force linker sourceMapping option to false.

This is an interim solution until angular/angular#42769 is fixed.

Closes #21271

Author: alan-agius4

packages/angular_devkit/build_angular/src/babel/presets/application.ts

@@ -137,6 +137,8 @@ export default function (api: unknown, options: ApplicationPresetOptions) {
     plugins.push(
       createEs2015LinkerPlugin({
         linkerJitMode: options.angularLinker.jitMode,
+        // This is a workaround until https://github.com/angular/angular/issues/42769 is fixed.
+        sourceMapping: false,
         logger: createNgtscLogger(options.diagnosticReporter),
         fileSystem: {
           resolve: path.resolve,