Ignore conflicts with decls that are not generated

Author: duckdoom5

src/Generator/Passes/RenamePass.cs

@@ -194,6 +194,8 @@ where typedefDecl.Type.Desugar() is FunctionType
                     declarations.AddRange(@class.TemplateParameters);
             }
 
+            declarations.RemoveAll(d => !d.IsGenerated);
+
             var existing = declarations.Find(d => d != decl && d.Name == newName);
             if (existing != null)
                 return CheckExisting(decl, existing);