test(@angular-devkit/build-angular): allow identifiers with numbers i…

…n production build E2E bootstrap call check

The JavaScript optimizer can potentially create identifiers that contain both letters and numbers (for example, `y2`). Such values were not previously accepted in the `build/prod-build` E2E test when checking for an Angular `bootstrapModule` call.

tests/legacy-cli/e2e/tests/build/prod-build.ts

@@ -27,7 +27,7 @@ export default async function () {
 
   // Can't use the `ng` helper because somewhere the environment gets
   // stuck to the first build done
-  const bootstrapRegExp = /bootstrapModule\(.?[a-zA-Z]+\)\./;
+  const bootstrapRegExp = /bootstrapModule\([a-zA-Z]+[0-9]*\)\./;
 
   await ng('build');
   await expectFileToExist(join(process.cwd(), 'dist'));