build: refactor ambient node & jasmine types so they are only included where needed (#25528)

PR Close #25528

packages/types.d.ts

@@ -9,13 +9,18 @@
 // This file contains all ambient imports needed to compile the packages/ source code
 
 /// <reference types="hammerjs" />
-/// <reference types="jasmine" />
-/// <reference types="node" />
 /// <reference types="zone.js" />
 /// <reference path="./es6-subset.d.ts" />
 /// <reference path="./goog.d.ts" />
 /// <reference path="./system.d.ts" />
 
+// Do not included "node" and "jasmine" types here as we don't
+// want these ambient types to be included everywhere.
+// Tests will bring in ambient node & jasmine types with
+// /packages/tsconfig-test.json when `testonly = True` is set
+// and packages such as platform-server that need these types should
+// use `/// <reference types="x">` in their main entry points
+
 declare let isNode: boolean;
 declare let isBrowser: boolean;