fix current dir still open

Author: lorentzlasson

lua/nvim-tree/actions/tree/modifiers/collapse.lua

@@ -39,10 +39,12 @@ function M.collapse(opts)
 
   local selected_nodes
   if opts.under_cursor then
+    local dir = node:as(DirectoryNode)
     if not node or not node.nodes then
       return
     end
     selected_nodes = node.nodes
+    dir.open = false
   else
     selected_nodes = explorer.nodes
   end