fix(数据大屏): 修复导出图片时存在滚动条问题

core/core-frontend/src/components/data-visualization/canvas/DePreview.vue

@@ -349,6 +349,7 @@ defineExpose({
     :id="domId"
     class="canvas-container"
     :style="canvasStyle"
+    :class="{ 'de-download-custom': downloadStatus }"
     ref="previewCanvas"
     @mousedown="handleMouseDown"
   >

core/core-frontend/src/style/index.less

@@ -510,3 +510,9 @@ strong {
   width: 100%;
   height: 100% !important;
 }
+
+.de-download-custom {
+  div {
+    overflow: hidden;
+  }
+}