fix: avoid passive wheel preventDefault warnings in canvas

components/canvas/CanvasWorkspace.tsx

@@ -85,7 +85,9 @@ export function CanvasWorkspace() {
     if (!container) return;
 
     const preventTrackpadHistorySwipe = (event: WheelEvent) => {
-      event.preventDefault();
+      if (event.cancelable) {
+        event.preventDefault();
+      }
     };
 
     container.addEventListener("wheel", preventTrackpadHistorySwipe, { passive: false });
@@ -312,7 +314,9 @@ export function CanvasWorkspace() {
   // 处理滚轮缩放
   const handleWheel = useCallback((e: React.WheelEvent) => {
     if (!isEventFromCanvasContainer(e.target)) return;
-    e.preventDefault();
+    if (e.cancelable) {
+      e.preventDefault();
+    }
     e.stopPropagation();
 
     // mac: 双指滚动默认平移，Cmd/Ctrl+滚轮才缩放（保留触控板体验）