Document potentially unexpected `autoScale` behavior

js/views/file_input_view.js

@@ -108,6 +108,9 @@
                             canvas.toDataURL('image/jpeg', quality)
                         );
                         quality = quality * maxSize / blob.size;
+                        // NOTE: During testing with a large image, we observed the
+                        // `quality` value being > 1. Should we clamp it to [0.5, 1.0]?
+                        // See: https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/toBlob#Syntax
                         if (quality < 0.5) {
                             quality = 0.5;
                         }