[BUG][cpp-qt-client] Required array member is not outputted to JSON

Description

The array item is marked required in the .yaml file but is not visible in json file

schemas:
  SomeObject:
    type: object
    properties:
        some_array:
            type: array
            items:
                $ref: "#/components/schemas/SomeArray"
    required:
        - some_array

The check for putting array member is

// toJsonObject() {
  if ( m_{{name}}.size() > 0 ) {
      // put values to json
  }
// }

which is incorrect for required values - even empty array should be present in there.

The correct approach would be to check whether the variable is required and then perform this check

// toJsonObject() {
  if ( true{{^required}} && m_{{name}}.size() > 0{{/required}} ) {
      // put values to json
  }
// }

openapi-generator version

7.22.0

Locate the cpp-qt-client template responsible for toJsonObject() and trace generated output for the YAML example. Verify that a required empty array is emitted while optional empty arrays retain their existing behavior, then run the relevant generator tests or generation path to confirm the output.