[Oracle] Migration of JSON_ARRAYAGG(numeric) is unsupported

[shubham-yb]

PostgreSQL's JSON_ARRAYAGG function does not support numeric inputs directly. It requires inputs that can be converted directly to JSON, such as text. Therefore, numeric values need to be cast to text before they can be used with JSON_ARRAYAGG.

The above is supported by Oracle and thus migrating such a clause causes errors.

Workaround: Use the JSON_AGG() function instead for such an input.