LiveShaping Sorting not updated when sort and group property changes

* .NET Core Version: 3.1.100 (commit cd82f021f4)
* Windows version: 1709/1809/1903
* Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes

**Problem description:**
LiveShaping bug that occurs when using both sort and group.

**Actual behavior:**
The bug occurs when we have a ListCollectionView using LiveShaping, with both a SortDescription and a GroupDescription. If the item changes both the sort and group live properties, the resulting list is not sorted.

**Expected behavior:**
Expected grouping and sorting changes to be reflected in the view.

**Minimal repro:**
Sample application at https://github.com/Flueworks/WpfLiveShapingBug