perf(util): dont trigger VeryLazy autocmds when exiting

lua/lazy/core/util.lua

@@ -142,6 +142,9 @@ end
 function M.very_lazy()
   local function _load()
     vim.schedule(function()
+      if vim.v.exiting then
+        return
+      end
       vim.g.did_very_lazy = true
       vim.api.nvim_exec_autocmds("User", { pattern = "VeryLazy", modeline = false })
     end)