Classes with arbitrary values are not sorted

**Describe the bug**
It doesn't sort classes with arbitrary values like h-[50px]

**To Reproduce**
Steps to reproduce the behavior:

1. Go to add arbitrary value and few other classes
2. Save
4. See error

**Expected behavior**
Arbitrary values should be sorter either at the end of it's main class ( h-2 h-4 h-[50px] ) or a the end

