Improved Mini-Calendars and Unscheduled Hover

This update fixes an issue that could cause the calendar to become unresponsive in FileMaker when opening the quick date picker while the sidebar is showing the mini calendars tab. It also resolves an issue that could trigger a calendar resize when hovering over unscheduled items where the styling is changed with an action. This would not have been noticeable in most circumstances, but with a lot of events, it could have caused issues.