1786 git next prev land on dirs (#1787)

* Filtered dir with git status that are open when show_on_open_dir is false

* refactored for single source of truth of existence of git status on a node

Putting `has_git_status()` in `explorer.common` because that's where node.status is constructed
Or at least I think that's where it's constructed

* 1786 semantic nit

Co-authored-by: Alexander Courtis <alex@courtis.org>

lua/nvim-tree/actions/moves/item.lua

@@ -2,6 +2,7 @@ local utils = require "nvim-tree.utils"
 local view = require "nvim-tree.view"
 local core = require "nvim-tree.core"
 local lib = require "nvim-tree.lib"
+local explorer_common = require "nvim-tree.explorer.common"
 
 local M = {}
 
@@ -14,7 +15,7 @@ function M.fn(where, what)
     for line, node in pairs(nodes_by_line) do
       local valid = false
       if what == "git" then
-        valid = node.git_status ~= nil
+        valid = explorer_common.shows_git_status(node)
       elseif what == "diag" then
         valid = node.diag_status ~= nil
       end