add bind(this) for Admin methods

Author: torounit

packages/e2e-test-utils-playwright/src/admin/index.ts

@@ -33,8 +33,8 @@ export class Admin {
 		this.pageUtils = pageUtils;
 	}
 
-	createNewPost = createNewPost;
-	getPageError = getPageError;
-	visitAdminPage = visitAdminPage;
-	visitSiteEditor = visitSiteEditor;
+	createNewPost = createNewPost.bind( this );
+	getPageError = getPageError.bind( this );
+	visitAdminPage = visitAdminPage.bind( this );
+	visitSiteEditor = visitSiteEditor.bind( this );
 }

packages/e2e-test-utils-playwright/src/admin/visit-site-editor.ts

@@ -8,7 +8,7 @@ import { addQueryArgs } from '@wordpress/url';
  */
 import type { Admin } from './';
 
-interface SiteEditorQueryParams {
+export interface SiteEditorQueryParams {
 	postId: string | number;
 	postType: string;
 }