Microsoft Purview compliance portal: Insider Risk Management - Experience enhancements to IRM alert investigation workflow

Experience enhancements to IRM alert investigation workflow including updates to the alert's "All risk factors" page and activity explorer. These enhancements will give customers the ability to maximize the visual space for their investigation. We are adding to each component a minimize/ maximize button and hiding the horizontal banner on the Alerts pages by default. We are also enhancing the All Risk Factors page for better UX.