Merge pull request #4953 from meerkat-morecats/fix-4686

fix: transfer tree模式下右侧面板无法滚动  (#4686)

packages/amis-ui/src/components/Transfer.tsx

@@ -628,7 +628,9 @@ export class Transfer<
     const placeholder =
       resultSearchPlaceholder || __('Transfer.selectFromLeft');
 
-    return resultSelectMode === 'table' ? (
+    switch (resultSelectMode) {
+      case 'table':
+        return (
           <ResultTableList
             classnames={cx}
             columns={columns!}
@@ -643,9 +645,12 @@ export class Transfer<
             placeholder={placeholder}
             onSearch={onResultSearch}
           />
-    ) : resultSelectMode === 'tree' ? (
+        );
+      case 'tree':
+        return (
           <ResultTreeList
             classnames={cx}
+            className={cx('Transfer-value')}
             options={options}
             valueField={'value'}
             value={value || []}
@@ -655,7 +660,9 @@ export class Transfer<
             placeholder={placeholder}
             onSearch={onResultSearch}
           />
-    ) : (
+        );
+      default:
+        return (
           <ResultList
             className={cx('Transfer-value')}
             sortable={sortable}
@@ -669,6 +676,7 @@ export class Transfer<
           />
         );
     }
+  }
 
   render() {
     const {