fix: make all tests green with new view engine and JIT

Note that this does not yet include enabling the view engine
by default.

Included refactoring:
- view engine: split namespace of elements / attributes already
  when creating the `NodeDef`
- view engine: when injecting the old `Renderer`, use an implementation
  that is based on `RendererV2`
- view engine: store view queries in the component view, not
  on the host element

modules/@angular/platform-browser/test/browser/tools/tools_spec.ts

@@ -6,7 +6,6 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {afterEach, beforeEach, describe, it} from '@angular/core/testing/testing_internal';
 import {disableDebugTools, enableDebugTools} from '@angular/platform-browser';
 
 import {SpyComponentRef, callNgProfilerTimeChangeDetection} from './spies';