add is_integer to support example_value function whitelist (pytorch#1…

…39484)

Fixes python test/dynamo/test_dynamic_shapes.py DynamicShapesFunctionTests.test_is_integer_dynamic_shapes when specialize_float=False

Pull Request resolved: pytorch#139484
Approved by: https://github.com/ezyang
ghstack dependencies: pytorch#139451, pytorch#139482

torch/_dynamo/variables/builder.py

@@ -2373,6 +2373,7 @@ def handle_traced_output(example_value, tx, proxy, options, subclass_type, targe
             torch.backends.cuda.is_flash_attention_available,
             torch.backends.cuda.can_use_flash_attention,
             torch.backends.cuda.can_use_efficient_attention,
+            "is_integer",
         ]
         + list(supported_const_comparison_op_values.keys())
     ):