False positive Layout/EmptyLinesAroundArguments with multiline heredoc args

[jacobpgn]

Layout/EmptyLinesAroundArguments appears to fail incorrectly when a method is called with both:

1. a multiline heredoc as an argument (or part of an argument, e.g. as a hash value)
2. a chained method which also receives arguments

Expected behavior

I would expect the following to not fail for this cop:

def chocolate
  bar(<<~DOCS)
    Sometimes we foo the bars

    Other times the bars foo us
  DOCS
    .call!(true)
end

Actual behavior

C: Layout/EmptyLinesAroundArguments: Empty line detected around arguments 💥

Steps to reproduce the problem

See example in Expected behaviour.

RuboCop version

0.52.1 (using Parser 2.4.0.2, running on ruby 2.5.0 x86_64-darwin16)