Single Month Header Render Hooks
In Multi-Month view, the month header is the title element above each month grid (e.g. “January 2025”).
singleMonthHeaderClass - a ClassName Input
singleMonthHeaderInnerClass - a ClassName Input for the inner element, which may be a nav link
Argument
When the above hooks are specified as a function in the form function(arg), the arg is an object with the following properties:
date- Date object representing the first day of the monthhasNavLink