refacto: set tree explorer in the global state

also remove the redraw method and use renderer.draw immediately

lua/nvim-tree/actions/change-dir.lua

@@ -9,8 +9,8 @@ local M = {
 }
 
 function M.fn(name)
-  local foldername = name == '..' and vim.fn.fnamemodify(lib().Tree.cwd, ':h') or name
-  local no_cwd_change = vim.fn.expand(foldername) == lib().Tree.cwd
+  local foldername = name == '..' and vim.fn.fnamemodify(TreeExplorer.cwd, ':h') or name
+  local no_cwd_change = vim.fn.expand(foldername) == TreeExplorer.cwd
   local new_tab = a.nvim_get_current_tabpage()
   local is_window = vim.v.event.scope == "window" and new_tab == M.current_tab
   if no_cwd_change or is_window then