orquesta with-items-model for dict error

[jiangxianfu]

SUMMARY

orquesta with-items-model for dict is error

i compare two version ,data class type is different

stackstorm 3.5
yaql: $.items() type is: <class 'generator'> <generator object ItemsView.iter at 0x7f5146a85d58>

stackstorm 3.6 yaql: $.items() type is: class collections.abc.ItemsView

STACKSTORM VERSION

stacstorm 3.6 is error stackstorm 3.5 is ok

OS, environment, install method

in docker

Steps to reproduce the problem

version: "1.0"
description: test with.
input:
  - input_num
tasks:
  task0:
    action: core.echo message=ok
    input:
      input_num: <% ctx().input_num %>
    next:
      - when: <% succeeded() %>
        publish:
          - messages: <% result().result %>
        do: task1

  task1:
    with: k, v in <% ctx(messages).items() %>
    action: core.echo message=<% item(v) %>

Expected Results

YaqlEvaluationException: Unable to evaluate expression '<% ctx(messages).items() %>'. TypeError: unhashable type: 'list",

Actual Results

stackstorm 3.5 is ok

stacstorm 3.6 is error

but, when i change source code at stackstorm 3.6 (yaql/language/utils.py): engine.options.get('yaql.convertSetsToLists', False)===>engine.options.get('yaql.convertSetsToLists', True) then it works ok. !!!!! why?

Thanks!

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