Ignore out-of-range mouse button values using from_bits_truncate#3541

TrueDoctor merged 3 commits intoGraphiteEditor:masterGraphiteEditor/Graphite:masterfrom

Ayush2k02:fix/pen-tablet-eraser-mouse-buttonsAyush2k02/Graphite:fix/pen-tablet-eraser-mouse-buttonsCopy head branch name to clipboard