By ANNE D'INNOCENZIO, AP Retail Writer NEW YORK (AP) — Kohl's says that recent offers to purchase the department store chain undervalue its business and that it is adopting a shareholder rights plan to head off any hostile takeovers. The shareholder rights plan, known as a "poison pill," is effective immediately and set to expire on Feb. 2, 2023, the company said Friday. "We have a high degree of confidence