相机预览-左侧场景树的宽度不需要收缩

src/views/cameras/preview/CameraPreview.vue

@@ -123,6 +123,7 @@
   }
   .cameraTree {
     width: 250px;
+    flex-shrink: 0;
     // height: 800px;
     // border: 1px solid #ccc;
     border: 1px solid #f0f2f5;