Determines if the current session is interactive.
An interactive session is one that involves an end-user interacting with a user interface that then retrieves information from a server. An example of this type of session is when a user logs in using the log-in screen or uses a form to query a data store. A non-interactive session is one that only involves programmatic interaction with a server such as a SOAP request to retrieve data.
https://docs.servicenow.com/bundle/london-application-development/page/app-store/dev_portal/API_reference/GlideSession/concept/c_GlideSessionAPI.html
