Linux Mint Cinnamon update: unified keyboard settings & enhanced menu design

Linux Mint's next Cinnamon version introduces unified keyboard settings, presenting both traditional layouts and IBus input methods together. Wayland support has been added for all keyboard layouts and input methods, addressing previous restrictions. The on-screen keyboard is now implemented natively with improved input method support and a refreshed design. Additionally, the Cinnamon application menu has been redesigned for enhanced usability and flexibility.