This is a hotfix release for niri v25.05.

• Fixed handling of layer surfaces unmapped through a null buffer commit: they will now receive an initial configure as necessary (thanks @alex-huff). This makes the kitty quick access terminal work.
• Fixed unmapped layer surfaces preventing popups from appearing (thanks @alex-huff).
• Fixed brief hover events when the cursor is hidden (thanks @Duncaen). Also fixed brief cursor hovers when a hidden cursor warps (i.e. with warp-mouse-to-focus or with focus-monitor-right etc.).
• Renamed un/set/toggle-urgent to un/set/toggle-window-urgent, their intended name. This was my oversight. This change is not config-breaking because these actions aren't bindable, but it does mean you need to change the name when calling niri msg action. I went ahead with this break because I don't believe these actions are used anywhere yet (and others confirmed that).
• Fixed screen not always redrawing on niri msg set-window-urgent and other urgency actions.
• Updated Smithay:
  • Fixed numlock activating only after pressing another modifier key (thanks @erdii).
  • Fixed incorrect reporting of tablet pen tilt.
  • Fixed certain clients like fcitx causing frequent keyboard keymap events to clients.