Style/RescueModifier --fix mangles heredoc

[bcdanieldickison]

Originally reported in standardrb/standard#652

Given example.rb:

foo(<<~EOF) rescue nil
  bar
EOF

standardrb --fix example.rb creates syntactically invalid output from the Style/RescueModifier rule.

Expected behavior

begin
  foo(<<~EOF)
    bar
  EOF
rescue
  nil
end

Actual behavior

begin
  foo(<<~EOF)
rescue
  nil
end
  bar
EOF

Steps to reproduce the problem

1. Create example.rb as above
2. Run standardrb --fix example.rb

RuboCop version

standardrb -V
Standard version: 1.40.0
RuboCop version:  1.65.1 (using Parser 3.3.4.2, rubocop-ast 1.32.1, running on ruby 3.3.5) [arm64-darwin24]