feat(ivy): support injection even if no injector present (#23345)

- Remove default injection value from `inject` / `directiveInject` since
  it is not possible to set using annotations.
- Module `Injector` is stored on `LView` instead of `LInjector` data
  structure because it can change only at `LView` level. (More efficient)
- Add `ngInjectableDef` to `IterableDiffers` so that existing tests can
  pass as well as enable `IterableDiffers` to be injectable without
  `Injector`

PR Close #23345

packages/core/src/render3/interfaces/injector.ts

@@ -7,7 +7,6 @@
  */
 
 import {ChangeDetectorRef} from '../../change_detection/change_detector_ref';
-import {Injector} from '../../di/injector';
 import {ElementRef} from '../../linker/element_ref';
 import {TemplateRef} from '../../linker/template_ref';
 import {ViewContainerRef} from '../../linker/view_container_ref';
@@ -69,8 +68,6 @@ export interface LInjector {
   cbf6: number;
   cbf7: number;
 
-  injector: Injector|null;
-
   /** Stores the TemplateRef so subsequent injections of the TemplateRef get the same instance. */
   templateRef: TemplateRef<any>|null;
 

packages/core/src/render3/interfaces/view.ts

@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+import {Injector} from '../../di/injector';
 import {LContainer} from './container';
 import {ComponentTemplate, DirectiveDef, DirectiveDefList, PipeDef, PipeDefList} from './definition';
 import {LElementNode, LViewNode, TNode} from './node';
@@ -189,6 +190,11 @@ export interface LView {
    * Queries active for this view - nodes from a view are reported to those queries
    */
   queries: LQueries|null;
+
+  /**
+   * An optional Module Injector to be used as fall back after Element Injectors are consulted.
+   */
+  injector: Injector|null;
 }
 
 /** Flags associated with an LView (saved in LView.flags) */