Revise taxes for class 17 data center property

This bill amends Montana's property tax classification system to update how data centers are categorized and taxed. It extends the construction timeline for data center property from 15 years to 25 years and revises ownership requirements for qualifying facilities. The legislation also clarifies definitions for electrical generation facilities and telecommunications infrastructure, ensuring these assets are properly classified under existing tax rules. Additionally, it maintains the current 5-year tax exemption for fiber optic and coaxial cable while requiring reinvestment of tax savings into new infrastructure to preserve the benefit.