RendererV2 -> Renderer2 rename (#14998)

* refactor: rename `RendererV2` into `Renderer2`

BREAKING CHANGE (since 4.0 rc.1):
- rename `RendererV2` to `Renderer2`
- rename `RendererTypeV2` to `RendererType2`
- rename `RendererFactoryV2` to `RendererFactory2`

tools/public_api_guard/core/typings/core.d.ts

@@ -807,22 +807,7 @@ export declare abstract class Renderer {
 }
 
 /** @experimental */
-export declare abstract class RendererFactoryV2 {
-    abstract createRenderer(hostElement: any, type: RendererTypeV2): RendererV2;
-}
-
-/** @experimental */
-export interface RendererTypeV2 {
-    data: {
-        [kind: string]: any;
-    };
-    encapsulation: ViewEncapsulation;
-    id: string;
-    styles: (string | any[])[];
-}
-
-/** @experimental */
-export declare abstract class RendererV2 {
+export declare abstract class Renderer2 {
     readonly abstract data: {
         [key: string]: any;
     };
@@ -834,7 +819,7 @@ export declare abstract class RendererV2 {
     abstract createText(value: string): any;
     abstract destroy(): void;
     abstract insertBefore(parent: any, newChild: any, refChild: any): void;
-    abstract listen(target: 'window' | 'document' | 'body' | any, eventName: string, callback: (event: any) => boolean): () => void;
+    abstract listen(target: 'window' | 'document' | 'body' | any, eventName: string, callback: (event: any) => boolean | void): () => void;
     abstract nextSibling(node: any): any;
     abstract parentNode(node: any): any;
     abstract removeAttribute(el: any, name: string, namespace?: string): void;
@@ -848,6 +833,21 @@ export declare abstract class RendererV2 {
     abstract setValue(node: any, value: string): void;
 }
 
+/** @experimental */
+export declare abstract class RendererFactory2 {
+    abstract createRenderer(hostElement: any, type: RendererType2): Renderer2;
+}
+
+/** @experimental */
+export interface RendererType2 {
+    data: {
+        [kind: string]: any;
+    };
+    encapsulation: ViewEncapsulation;
+    id: string;
+    styles: (string | any[])[];
+}
+
 /** @experimental */
 export declare class ResolvedReflectiveFactory {
     dependencies: ReflectiveDependency[];