set value for credentials

src/Umbraco.Web.UI.Client/src/apps/app/app.element.ts

@@ -136,6 +136,7 @@ export class UmbAppElement extends UmbLitElement {
 		// Instruct all requests to use the auth flow to get and use the access_token for all subsequent requests
 		OpenAPI.TOKEN = () => this.#authContext!.getLatestToken();
 		OpenAPI.WITH_CREDENTIALS = true;
+		OpenAPI.CREDENTIALS = 'include';
 	}
 
 	#redirect() {