fix: correct index in movement actions (#1058)

lua/nvim-tree/view.lua

@@ -342,6 +342,10 @@ function M._prevent_buffer_override()
   end)
 end
 
+function M.is_root_folder_visible(tree)
+  return tree.cwd and tree.cwd ~= "/" and not M.View.hide_root_folder
+end
+
 local DEFAULT_CONFIG = {
   width = 30,
   height = 30,