Fixed macro expansion

Src/AST/Myc.Ast.Visitor.pas

@@ -503,12 +503,14 @@ var
     N: TMacroExpansionNode;
 begin
     N := (Node as TMacroExpansionNode);
-    // Visit original call parts
-    N.Callee := Accept(N.Callee);
-    N.Arguments := AcceptNodes(N.Arguments);
-    // Visit expanded body
+
+    // ONLY visit the expanded body, as this is the "real" AST node.
     N.ExpandedBody := Accept(N.ExpandedBody);
-    Result := Node;
+
+    // Callee and Arguments are metadata for the visualizer and must NOT be visited
+    // by subsequent phases (Binder, TypeChecker, etc.).
+
+    Result := Node; // Return the (mutated) wrapper
 end;
 
 function TAstTransformer.VisitBlockExpression(const Node: IBlockExpressionNode): IAstNode;