build(language-service): remove typescript from ivy bundle (angular#38088)

Currently the Ivy language service bundle is [10MB](
https://unpkg.com/browse/@angular/[email protected]/bundles/) because we
accidentally included typescript in the bundle.

With this change, the bundle size goes down to 1.6MB, which is even smaller
than the View Engine bundle (1.8MB).

```bash
$ yarn bazel build //packages/language-service/bundles:ivy
$ ls -lh dist/bin/packages/language-service/bundles/ivy.umd.js
1.6M Jul 15 15:49 dist/bin/packages/language-service/bundles/ivy.umd.js
```

PR Close angular#38088

Author: Keen Yee Liau

packages/language-service/bundles/BUILD.bazel

@@ -24,7 +24,8 @@ ls_rollup_bundle(
     globals = {
         "fs": "fs",
         "path": "path",
-        "typescript/lib/tsserverlibrary": "ts",
+        "typescript": "ts",
+        "typescript/lib/tsserverlibrary": "tss",
     },
     license_banner = ":banner",
     visibility = ["//packages/language-service:__pkg__"],