fix: Gitignore rules not being applied on new nodes. (#415)

lua/nvim-tree/lib.lua

@@ -152,12 +152,10 @@ end
 function M.refresh_tree()
   if vim.v.exiting ~= vim.NIL then return end
 
+  local use_git = config.use_git()
+  if use_git then git.reload_roots() end
   refresh_nodes(M.Tree)
-
-  if config.get_icon_state().show_git_icon or vim.g.nvim_tree_git_hl == 1 then
-    git.reload_roots()
-    refresh_git(M.Tree)
-  end
+  if use_git then refresh_git(M.Tree) end
 
   if vim.g.nvim_tree_lsp_diagnostics == 1 then
     diagnostics.update()