--no-self-contained flag is forced upon build

[kylethomas320]

• Version: 8.31.1

• Target: .NET Core 3.1

I recently upgraded from the previous electron v7 to v8.31.1 and noticed that --no-self-contained is put in the build command. I need my build to be a self contained file, as in previous versions of Electron .NET. Will this be fixed in a later version? As this is hardcoded in the c# CLI code, I can't force it to go to self-contained myself. See: b6417d0#diff-3da8aff670c488206e99f7abe0c6f1bd.

Build command used:
dotnet build /target win

Thanks for the support!

[GregorBiswanger]

Duplicate of #387