“Update Screen” Local Flow Action
When your Flow changes some values, you can now command the Salesforce page to intelligently refresh.
Documentation: This simple action takes a single input parameter: the recordId of the current page.
Developer Notes
This component uses the reloadRecord method on the force:recordData component:

This essentially wraps the force:recordData component:

Here’s an older article on UpdateScreen that provides additional detail including some ideas about updating related records.
Learn more about Local Actions