Support unary not on lists (#102210)

Fixes #ISSUE_NUMBER

Pull Request resolved: https://github.com/pytorch/pytorch/pull/102210
Approved by: https://github.com/anijain2305

test/dynamo/test_functions.py

@@ -807,6 +807,10 @@ class FunctionTests(torch._dynamo.test_case.TestCase):
         tmp.append(a + b)
         return tmp
 
+    @make_test
+    def test_not_list(a):
+        return not [a + 1]
+
     @make_test
     def test_islice_chain(a, b):
         tmp1 = [a + 1, a + 2]

torch/_dynamo/variables/builtin.py

@@ -1314,6 +1314,10 @@ class BuiltinVariable(VariableTracker):
                 ),
                 sym_num=None,
             )
+
+        if isinstance(a, ListVariable):
+            return ConstantVariable(len(a.items) == 0).add_options(self, a)
+
         return None
 
     call_eq = _comparison