build: migrate remaining usage of pkg_npm to rules_js

This is necessary so that we can delete the `pkg_npm` macro and fully
leverage the `rules_js` variant.

packages/angular/ssr/BUILD.bazel

@@ -53,7 +53,7 @@ ng_package(
         "../../third_party/beasties",
     ],
     nested_packages = [
-        "//packages/angular/ssr/schematics:npm_package",
+        "//packages/angular/ssr/schematics:pkg",
     ],
     deps = [
         ":ssr",

packages/angular/ssr/schematics/BUILD.bazel

@@ -3,7 +3,7 @@
 # Use of this source code is governed by an MIT-style license that can be
 # found in the LICENSE file at https://angular.dev/license
 
-load("//tools:defaults.bzl", "pkg_npm")
+load("@aspect_rules_js//npm:defs.bzl", "npm_package")
 load("//tools:defaults2.bzl", "jasmine_test", "ts_project")
 load("//tools:ts_json_schema.bzl", "ts_json_schema")
 
@@ -57,7 +57,6 @@ ts_project(
         "//packages/angular/ssr/schematics:" + src.replace(".json", ".ts")
         for (src, _) in ALL_SCHEMA_TARGETS
     ],
-    data = [":schematics_assets"],
     module_name = "@angular/ssr/schematics",
     deps = [
         "//packages/angular/ssr:node_modules/@angular-devkit/schematics",
@@ -86,16 +85,18 @@ ts_project(
 jasmine_test(
     name = "ssr_schematics_test",
     data = [
+        ":schematics_assets",
         ":ssr_schematics_test_lib_rjs",
     ],
 )
 
 # This package is intended to be combined into the main @angular/ssr package as a dep.
-pkg_npm(
-    name = "npm_package",
-    pkg_json = None,
-    visibility = ["//packages/angular/ssr:__pkg__"],
-    deps = [
-        ":schematics",
+npm_package(
+    name = "pkg",
+    srcs = [
+        "package.json",
+        ":schematics_assets",
+        ":schematics_rjs",
     ],
+    visibility = ["//packages/angular/ssr:__pkg__"],
 )