fix ui-config for InputAccordion [custom_script_source]

[light-and-ray]

Description

If InputAccordion is under script's ui, its value is loaded from non custom script path. But when default is changed, it saves by custom script path, and wont be loaded next time. Also it's not happened with invisible checkbox, and the InputAccordion works as disabled dispite visual checkbox is on

Also i've fixed this condition:

if isinstance(obj, gr.Accordion) and isinstance(x, InputAccordion) and field == 'value':
  field = 'open'

• It's always false because obj can't be gr.Accordion and InputAccordion at the same time.
• InputAccordion is a child of gr.Checkbox and doesn't have open field

Checklist:

• I have read contributing wiki page
• I have performed a self-review of my own code
• My code follows the style guidelines
• My code passes tests

[AUTOMATIC1111]

I agree with custom_script_source change, but the condition is right - obj and x are not the same thing.

[light-and-ray]

My bad. Fixed