build: set default ts_devserver serving_path to /app_bundle.js to match g3 (#33996)

PR Close #33996

modules/benchmarks/src/largeform/ng2/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_module")
-load("@npm_bazel_typescript//:index.bzl", "ts_devserver")
+load("//tools:defaults.bzl", "ng_module", "ts_devserver")
 load("//modules/benchmarks:benchmark_test.bzl", "benchmark_test")
 
 package(default_visibility = ["//modules/benchmarks:__subpackages__"])

modules/benchmarks/src/largeform/ng2/index.html

@@ -20,7 +20,7 @@
     <app id="root">Loading...</app>
   </div>
 
-  <!--default load location for ts_devserver-->
-  <script src="/_/ts_scripts.js"></script>
+  <!--load location for ts_devserver-->
+  <script src="/app_bundle.js"></script>
 </body>
 </html>