Fix Style/Lambda whitespacing when auto-correct unparenthesized args

[palkan]

This PR makes autocorrect more accurate and replace

# bad
-> hello do
  puts hello
end

with

# good
lambda do |hello|
  puts hello
end

instead of

# not so good
lambda  do |hello|
  puts hello
end

[palkan]

And this one fixes #3142 , btw.

[jonas054]

I prefer if all calls within a class are downwards, so move this method last.

[jonas054]

One minor comment. Looks good otherwise! 👍
BTW, put [Fix #3142] at the beginning of the commit message.

[bbatsov]

You'll also have to rebase.

[palkan]

Done.