Windows Only. On some keyboard layouts, the right Alt key behaves as an "AltGR" key. This key emits both right alt and left ctrl key events, which means that it won't match keyboard shortcuts set to just Alt. This PR, for just layouts that include AltGr, if the scancode is for right Alt yet the virtual key is actually the control key then ignore these key events. This treats AltGr exactly as Alt. Pull Request: https://projects.blender.org/blender/blender/pulls/132536