A 28-year-old woman is brought to the emergency department following a road traffic accident with signs of hemorrhagic shock (BP 80/50 mmHg, HR 135/min, RR 28/min). After initiating massive transfusion protocol, the trauma team performs a FAST exam which is positive for free fluid in the pelvis. Imaging reveals a complex liver laceration with active bleeding. Which is the most common solid organ injury in blunt abdominal trauma?