ALE Should Not Run When Entering an Empty File

I added these two lines in my Neovim configuration (Lua) to not run ALE automatically after exiting insert mode:

```lua
vim.g.ale_lint_on_text_changed = "never"
vim.g.ale_lint_on_insert_leave = 0
```

If I enter into an empty Haskell file, (`neovim file.hs`), I will get an error message even though I haven't written anything yet. I think it should not show any warnings or errors if the file is empty.