Update specialize.py

Author: BobTheBuidler

mypyc/irbuild/specialize.py

@@ -659,7 +659,7 @@ def translate_isinstance(builder: IRBuilder, expr: CallExpr, callee: RefExpr) ->
             # we can compile this case to a noop
             return builder.false()
 
-        nodes: list[SymbolNode | None] = []
+        nodes: list[str] = []
         for item in type_expr.items:
             if not isinstance(item, RefExpr):
                 return None