Neoadjuvant Avutometinib/Defactinib and mFOLFIRINOX Combination Therapy in Pancreatic Adenocarcinoma

The goal of this study is to find out if taking two oral study drugs (avutometinib and defactinib) are safe for patients with pancreatic ductal adenocarcinoma (PDAC). Researchers also want to see if the drugs can slow down tumor growth and shrink tumors for possible surgery. These drugs are approved by the FDA to treat a certain kind of ovarian cancer. This study has two parts: * Part A is for patients whose cancer has spread to other parts of the body. * Part B is for patients whose cancer has not spread, but who cannot have surgery. Participants will take both drugs as told by their doctor with their regular cancer medicine. Participants will also give blood samples throughout the study. These samples will help researchers learn about how participants respond to treatment and about their pancreatic cancer.