refactor(@angular-devkit/build-angular): remove unneeded esbuild external packages workaround

Version 0.19 of esbuild added the ability to consider tsconfig path mappings when using the
external packages build option. This addition allows the Angular build system to remove a
resolve plugin that previously was used to workaround this limitation. Removal of the plugin
may also provide improved rebuild performance when used with the development server as many
of the JavaScript resolution attempts will no longer need to be handled by the now removed
plugin.

Author: clydin

packages/angular_devkit/build_angular/src/tools/esbuild/application-code-bundle.ts

@@ -13,7 +13,6 @@ import type { NormalizedApplicationBuildOptions } from '../../builders/applicati
 import { allowMangle } from '../../utils/environment-options';
 import { SourceFileCache, createCompilerPlugin } from './angular/compiler-plugin';
 import { createCompilerPluginOptions } from './compiler-plugin-options';
-import { createExternalPackagesPlugin } from './external-packages-plugin';
 import { createRxjsEsmResolutionPlugin } from './rxjs-esm-resolution-plugin';
 import { createSourcemapIngorelistPlugin } from './sourcemap-ignorelist-plugin';
 import { getFeatureSupport } from './utils';
@@ -56,8 +55,7 @@ export function createBrowserCodeBundleOptions(
   };
 
   if (options.externalPackages) {
-    buildOptions.plugins ??= [];
-    buildOptions.plugins.push(createExternalPackagesPlugin());
+    buildOptions.packages = 'external';
   }
 
   const polyfills = options.polyfills ? [...options.polyfills] : [];
@@ -156,7 +154,7 @@ export function createServerCodeBundleOptions(
 
   buildOptions.plugins ??= [];
   if (options.externalPackages) {
-    buildOptions.plugins.push(createExternalPackagesPlugin());
+    buildOptions.packages = 'external';
   } else {
     buildOptions.plugins.push(createRxjsEsmResolutionPlugin());
   }