fix: replace vim.* "requires" with explicit calls to vim functions (#1701)

lua/nvim-tree/git/init.lua

@@ -1,5 +1,3 @@
-local uv = vim.loop
-
 local log = require "nvim-tree.log"
 local utils = require "nvim-tree.utils"
 local git_utils = require "nvim-tree.git.utils"
@@ -74,7 +72,7 @@ function M.get_project_root(cwd)
     return nil
   end
 
-  local stat, _ = uv.fs_stat(cwd)
+  local stat, _ = vim.loop.fs_stat(cwd)
   if not stat or stat.type ~= "directory" then
     return nil
   end