If I choose “Open File” in VS Code on macOS, but want to choose a file within a sub-folder, I naturally highlight the folder and hit return, or possibly click the [open] button.
In either case, the entire folder and all contents are opened in the editor, which is not what I want.

How do I persuade VS Code to instead display the contents of that folder, still within the ‘Open…’ dialog, so that I can then select a single file to edit?