00000000 = no buttons pressed.
00000001 = only left button pressed.
00000010 = only right button pressed.
00000100 = only middle button pressed.
00000110 = only right and middle buttons pressed.
00000101 = only left and middle buttons pressed.
00000111 = all buttons pressed.
Stop registering a middle button click when left mouse button is triggered.
Referencing the Tetherscript dev guide
This should fix https://github.com/mKenfenheuer/steam-deck-windows-usermode-driver/issues/66 and https://github.com/mKenfenheuer/steam-deck-windows-usermode-driver/issues/62