Stops lighting from being able to strike in locations where rain doesn't occur, but allows lightning in adjacent areas where is allowed.
Reviewed-on: https://git.minetest.land/VoxeLibre/VoxeLibre/pulls/4386
Reviewed-by: the-real-herowl <the-real-herowl@noreply.git.minetest.land>
Co-authored-by: teknomunk <teknomunk@protonmail.com>
Co-committed-by: teknomunk <teknomunk@protonmail.com>