Resolves Issue with Asset Model Default Updates

[spencerrlongg]

Description

This resolves an issue where updating an Asset Model's defaults would throw an incorrect and vague validation error - the issue has something to do with the custom not_array validation rule on checkboxes.

This is just a temporary fix to get the GUI functionality working again, the only regression this should introduce is the fact that you can now trigger an exception by submitting an array to a custom field checkbox via the API.

I'm going to start working on a new branch today to properly validate checkboxes and fully resolve this issue, but wanted to get this in quickly to resolve the GUI issue.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

[shortcut-integration]

This pull request has been linked to Shortcut Story #24343: Validation error when using checkboxes on default custom fields models.

[what-the-diff]

PR Summary

• Introduction of a Temporary Fix in GUI
  This update introduces a temporary workaround to address an issue where the default settings within the model of the graphical user interface (GUI) weren't updating as expected.

[spencerrlongg]

Getting close to actually wrapping up the full fix for this, so gonna go ahead and close this (also because I was working off of the same branch without thinking so now this is more than what the description says)