Always emit dict type in literal

trans/transpiler/phases/emit_cpp/expr.py

@@ -209,7 +209,8 @@ class ExpressionVisitor(NodeVisitor):
             yield "}"
 
         if node.keys:
-            yield "PyDict{"
+            yield from self.visit(node.type)
+            yield "{"
             yield from join(", ", map(visit_item, node.keys, node.values))
             yield "}"
         else: