fix(gui-v2): close menu after clicking menu item

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nc-gui-v2/components/smartsheet/Grid.vue

@@ -291,7 +291,7 @@ onKeyStroke(['Tab', 'Shift', 'Enter', 'Delete', 'ArrowDown', 'ArrowUp', 'ArrowLe
         </table>
       </div>
       <template #overlay>
-        <div class="bg-white shadow">
+        <div class="bg-white shadow" @click="contextMenu = false">
           <div v-if="contextMenuTarget" class="nc-menu-item" @click="deleteRow(contextMenuTarget.row)">Delete row</div>
           <div class="nc-menu-item" @click="deleteSelectedRows">Delete all selected rows</div>
           <div v-if="contextMenuTarget" class="nc-menu-item" >Clear cell</div>