* json schema array component should use schema to generate example in case of array items.
* empty value checkbox should be disabled if not empty => not empty list || not empty string
* curl should also check for not empty list
fixes#5181
* application/json
* application/xml
* application/x-www-form-urlencoded
* Set requestBodyValue values to be an immutable Map, as "value". Previously stored as a normal String.
* This enables adding "errors" to the Map, for validation use
* note: getOAS3RequiredRequestBodyContentType requires state.spec,
* which is not available to state.oas3
