6.0.424 (Service Release 3.1)

This release adds a 6.0.400 SDK band manifest to better support installation through Visual Studio for Mac. The changes are otherwise identical to the previous 6.0.419 Service Release 3.

Full Changelog: https://github.com/dotnet/maui/compare/db197ebd4b86ea6140c8d5326883c13657cf7183…28ecaba81599b063d2ae2ae934b71f66e327bc8d