Maintenance: sort affected monitors alphabetically

⚠️ Please verify that this bug has NOT been raised before. • I checked and didn't find similar issue 🛡️ Security Policy • I agree to have read this project [Security Policy]( Description The list of 'affected monitors' on the new maintenance page, isn't sorted alphabetically, but (I assume) by ID. The list on the right hand side with all monitors, is sorted alphabetically and to have a consistent behaviour it would be nice to sort the list of affected monitors the same way. 👟 Reproduction steps Create a new monitor called X, and afterwards a new monitor called A. In the list with all monitors, A will be placed above X. Navigate to the maintenance page and create a new maintenance window. In the list of 'affected monitors' X will be above A If an additional monitor is created called G is will be listed in between A and X on the overview, but in the list on the maintenance page, it will be at the bottom. 👀 Expected behavior…