Revert

Author: dandavison

temporalio/workflow.py

@@ -1661,7 +1661,7 @@ def _assert_dynamic_handler_args(
         not arg_types
         or len(arg_types) != 2
         or arg_types[0] is not str
-        or arg_types[1] is not Sequence[temporalio.common.RawValue]
+        or arg_types[1] != Sequence[temporalio.common.RawValue]
     ):
         raise RuntimeError(
             "Dynamic handler must have 3 arguments: self, str, and Sequence[temporalio.common.RawValue]"