Revise laws related to highway patrol retirement and salaries

This bill creates a new retirement plan for Montana Highway Patrol officers, effective for all new hires starting July 1, 2027. It requires the current defined benefit retirement system to transition to a defined contribution plan (similar to a 401(k)), with existing officers able to switch to this plan by June 2027. Key changes include splitting employer contributions (10% to the new plan, with the rest funding officer salaries) and guaranteeing immediate vesting for all members. The bill also redirects personalized license plate fees to the retirement fund until the old system is fully paid off.