Merge branch 'iteration_1.3.3' into dev

src/business-components/course-video-item/index.module.less

@@ -6,6 +6,7 @@
     position: relative;
     border-radius: 4px;
     overflow: hidden;
+    flex-shrink: 0;
     :global {
       .van-image {
         width: inherit;