Fix #3023: Sort nulls like Excel by default at bottom

[melloware]

###Feature Requests
Fix #3023: Sort nulls like Excel by default at bottom

This always sorts NULLs at the bottom which is the way Excel does it by default.

[mertsincan]

Thanks @melloware ;)

[kbeeveer46]

Is there any way to enable the old setting where nulls are at the beginning in ascending order? I hope so. We've been telling our clients how to use the table and how it functions and now they are going to assume there are no nulls. Especially if there's 50+ pages of data. They're not going to know the nulls are on page 50 at the end. This is not something that should be changed without providing a setting to use the old method.

[melloware]

@kbeeveer46 can you open a new issue please. Since this sort mechanism is used across multiple components I am wondering if we can make it a global setting like PrimeReact.sortNullsHigh = true;