This is a breaking change - see BREAKING-CHANGES.txt

Co-authored-by: ValentynPavliuchenkoA <valentyn.pavliuchenko@avid.com>

Co-authored-by: Roland Rabien <figbug@gmail.com>

This change fixes an issue where the program list was not populated in
Cubase 12.

Co-authored-by: Dan Raviv <dan@soundradix.com>

While the affected callbacks are cancelled before the referenced
state is deleted, we have had user reports that they can still be
accessed by the cancelled callbacks causing crashes. After only
finding warnings that WinRT AsyncCallback cancellation is not a
guaranteed thing, we saw it best to wrap the pointers.

This commit fixes a regression introduced in 70968d46.

This bug was introduced in 140f8fedb1

This fixes an issue where the FileListComponent might fail to select a
file, because the file list reported that it was still loading during
the final ChangeListener callback.