When trying to import the custom config file I received the error message "Microsoft.VisualStudio.Component.Windows11SDK.22000: No matching package found."
Open SML.vsconfig into a text editor and replace "Microsoft.VisualStudio.Component.Windows11SDK.22000" with "Microsoft.VisualStudio.Component.Windows10SDK.19041". Save it and re-import the edited file and it should work.