Update Android dependencies and build tools to their latest available versions.
Rename the GameCube save magic constant to avoid a collision with the NDK 30 ARM64 signal context header.
To avoid using dual pane layout on very small devices, ensure that the current width available for display is at least medium (600dp).
It also has to be landscape, the dual pane mode looks weird on a tablet in portrait mode since there's not that much content.
