Show/Hide overflow doesn't automatically happen

[bruceharrison1984]

Vertically resizing the calendar will show/hide events as the overflow. However, navigating to a month with overflow events for the first time, the events will not hide until another state update is triggered.

To Reproduce
Steps to reproduce the behavior:

• Navigate to a month that has overflow
• Note the overflow events are not all hidden
• Hover over any event to trigger a state update
• The events now hide correctly

Expected behavior
Events should automatically hide when navigating to a month with overflow.

[bruceharrison1984]

This is now working correctly. The hook could certainly use some more work, but overflowing events are automatically hidden/shown as the container allows.