ApiSettingsForm conflicts with the "services_api_key_auth" module

Problem/Motivation

It is not possible to save OpenAI settings when the module "services_api_key_auth" is installed.
"services_api_key_auth" contains an authentication provider which breaks saving of the form.
The reason is the use of the name "api_key" for the form field.

Proposed resolution

The solution is to use more unique names for the fields. For example $form['openai_api_key'], $form['openai_api_org'].