fix selected assets show up in different menus (#342)

Signed-off-by: Jiaxuan-Yang <[email protected]>
Signed-off-by: BluThaitanium <[email protected]>

Author: JiaxuanYang

dashboard/origin-mlx/src/pages/MetaAllPage.tsx

@@ -185,7 +185,7 @@ function MetaAllPage(props: MetaAllPageProps) {
         <Paper>
           <EnhancedToolbar
             type={type}
-            numSelected={pipeline.components.length}
+            numSelected={selected.size}
             toggleModal={(e: never) => {}}
           />
           <Table>