Printing the schedule prints no sessions

[ryelle]

When sessions are favorited, printing the schedule page shows just the favorited sessions. If no sessions have been favorited, the expectation is that the full schedule will print, but instead nothing shows up.

Schedule – WordCamp US 2023.pdf

To reproduce

1. View a schedule with nothing favorited
2. Print using the system commands (ex, File > Print)
3. The schedule is empty

It might also be unexpected that only the favorited sessions print when using the system commands, but changing that might not be technically feasible.