Allow saving of arrays and primitives in JSON column

[CSLTech]

Checklist

• I have searched budibase discussions and github issues to check if my issue already exists

Describe the bug
When trying to save a string in a JSON field, the API rejects it instead of saving the string as JSON. If the input to a JSON field is a string, the API shouldn't try to parse it and instead just save it as a string. Database JSON fields accept strings as inputs and is a typical use case to store data from arbitrary types.

To Reproduce
Steps to reproduce the behavior:

1. Add a table with a JSON field
2. Add a form that includes this JSON field using a component that would allow you to populate a string
3. Try to save a string instead of JSON
4. Error

Expected behavior
The string should be saved as-is

[linear]

BUDI-8188 Unable to save text in JSON field

[ConorWebb96]

This seems valid, the field also doesn't seem to accept arrays wether its empty or otherwise.

The only type i got to work with this field were objects.

Strings, arrays are all valid JSON but throw the error saying invalid and won't allow you to save the record.