The new "Process Advisor" feature allows users to record screen and let Power Automate evaluate the process for automation readiness. This feature user account to have a UI Flow license.
On Power Automate web client/portal, users can create new Process under Process Advisor without any license. However it is not possible to use process functionality without a UI flow license. User is prompted to start a trial UI license only when they create screen recording within the process they created. "Starting a trial license" prompt should ideally appear when creating a Process (rather than screen recording), for not to set false expectations.