[gnome-builder] ls: Hide "Browse Folder" menu item when not in the Files workbench

[Christian Hergert <chergert src gnome org>]

commit 5a30b8772075d3de19a9c1b96b83d17c29e83131
Author: vanadiae <vanadiae35 gmail com>
Date:   Thu Dec 31 17:15:31 2020 +0100

    ls: Hide "Browse Folder" menu item when not in the Files workbench
    
    This is similar to what's done for most other menu items.

 src/plugins/ls/gtk/menus.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/ls/gtk/menus.ui b/src/plugins/ls/gtk/menus.ui
index afb33b486..e9c61fc2e 100644
--- a/src/plugins/ls/gtk/menus.ui
+++ b/src/plugins/ls/gtk/menus.ui
@@ -4,6 +4,7 @@
     <section id="project-tree-menu-open-section">
       <item>
         <attribute name="id">project-tree-menu-open-editor</attribute>
+        <attribute name="hidden-when">action-disabled</attribute>
         <attribute name="label" translatable="yes">Browse Folder</attribute>
         <attribute name="action">project-tree.open-with-hint</attribute>
         <attribute name="target" type="s">'ls'</attribute>