types(widget): Add missing name (#9031)

Co-authored-by: Ben <88249114+BenjammingKirby@users.noreply.github.com>

typings/index.d.ts

@@ -2943,6 +2943,7 @@ export class Widget extends Base {
   private _patch(data: RawWidgetData): void;
   public fetch(): Promise<Widget>;
   public id: Snowflake;
+  public name: string;
   public instantInvite?: string;
   public channels: Collection<Snowflake, WidgetChannel>;
   public members: Collection<string, WidgetMember>;