refactor: --self-contained is false if absent

From the documentation[1], it is implied that --self-contained is true
only if you specify it. It doesn't get enabled without a flag.

Therefore, we don't need to specify it where we want it to be disabled.

[1]: https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-publish

build.sh

@@ -10,9 +10,9 @@ echo "Building YAFC version $VERSION..."
 
 dotnet publish Yafc/Yafc.csproj -r win-x64 -c Release -o Build/Windows
 dotnet publish Yafc/Yafc.csproj -r win-x64 --self-contained -c Release -o Build/Windows-self-contained
-dotnet publish Yafc/Yafc.csproj -r osx-x64 --self-contained false -c Release -o Build/OSX
-dotnet publish Yafc/Yafc.csproj -r osx-arm64 --self-contained false -c Release -o Build/OSX-arm64
-dotnet publish Yafc/Yafc.csproj -r linux-x64 --self-contained false -c Release -o Build/Linux
+dotnet publish Yafc/Yafc.csproj -r osx-x64 -c Release -o Build/OSX
+dotnet publish Yafc/Yafc.csproj -r osx-arm64 -c Release -o Build/OSX-arm64
+dotnet publish Yafc/Yafc.csproj -r linux-x64 -c Release -o Build/Linux
 
 echo "The libraries of this release were scanned on Virustotal, but we could not reproduce the checksums." > Build/OSX-arm64/_WARNING.TXT
 echo "If you want to help with the checksums, please navigate to https://github.com/shpaass/yafc-ce/issues/274" >> Build/OSX-arm64/_WARNING.TXT