fix calc diamond bounds (#1394)

src/element/bounds.ts

@@ -288,7 +288,7 @@ export const getElementBounds = (
   if (element.type === "diamond") {
     const [x11, y11] = rotate(cx, y1, cx, cy, element.angle);
     const [x12, y12] = rotate(cx, y2, cx, cy, element.angle);
-    const [x22, y22] = rotate(x2, cy, cx, cy, element.angle);
+    const [x22, y22] = rotate(x1, cy, cx, cy, element.angle);
     const [x21, y21] = rotate(x2, cy, cx, cy, element.angle);
     const minX = Math.min(x11, x12, x22, x21);
     const minY = Math.min(y11, y12, y22, y21);