Support WIX_IS_NETFRAMEWORK_481_OR_LATER_INSTALLED

[ww898]

Based on #7425: This is not discussion. Nothing to be discussed here. This is real feature request. .NET Framework 4.8.1 is here: https://dotnet.microsoft.com/en-us/download/dotnet-framework/net481

[robmen]

#7425 is not a feature request. It is a single sentence that insinuates we owe you something even though, AFAIK, we've never met you before.

If you want to open a feature request, please complete the feature request template fully. Since you've never contributed to this community, I highly suggest you do so respectfully. The volunteers on this OSS project are very likely to ignore you if you are rude and/or act entitled. If you want to make demands, become a customer.

Note: please do not go open a feature request for .NET Framework 4.8.1 support. That was already added to WiX v4.