Use the type printer from CSharpGenerator in CSharpSources.

The code generator depends on the it being the same due to side effects from type printer context handling.

src/Generator/Generators/CSharp/CSharpGenerator.cs

@@ -17,7 +17,7 @@ namespace CppSharp.Generators.CSharp
         {
             var outputs = new List<CodeGenerator>();
 
-            var gen = new CSharpSources(Context, units);
+            var gen = new CSharpSources(Context, units) { TypePrinter = typePrinter };
             outputs.Add(gen);
 
             return outputs;

src/Generator/Generators/CSharp/CSharpSources.cs

@@ -124,7 +124,7 @@ namespace CppSharp.Generators.CSharp
 
     public class CSharpSources : CodeGenerator
     {
-        public CSharpTypePrinter TypePrinter { get; protected set; }
+        public CSharpTypePrinter TypePrinter { get; set; }
         public CSharpExpressionPrinter ExpressionPrinter { get; protected set; }
 
         public override string FileExtension => "cs";