message: fix: snap to grid (bottom)
  fixes issue in snap to the end of the grid vertically
diff: @@ -408,7 +408,7 @@ export function getGridGuidelines(
  const guidelines: SnapGuideline[] = [];
  if (snapGridHeight) {
  - for (let pos = 0; pos < containerHeight; pos += snapGridHeight) {
  + for (let pos = 0; pos <= containerHeight; pos += snapGridHeight) {
  guidelines.push({
  type: "horizontal",
  pos: [0, throttle(pos - clientTop, 0.1)],
  