SpaceInsideHashLiteralBraces should allow comment after opening brace

[sferik]

In #944 (comment), I mentioned that the SpaceBeforeFirstArg cop was generating a false positive offense for the following code:

ActionMailer::Base.smtp_settings = {
  address: 'smtp.sendgrid.net',
  port: '25',
  authentication: :plain,
  user_name: ENV['SENDGRID_USERNAME'],
  password: ENV['SENDGRID_PASSWORD'],
  domain: ENV['SENDGRID_DOMAIN'],
}

I tried disabling that offense as follows:

ActionMailer::Base.smtp_settings = { # rubocop:disable SpaceBeforeFirstArg

This generated a new offense from the SpaceInsideHashLiteralBraces cop:

C: Space inside { detected.

It seems to me that the SpaceInsideHashLiteralBraces cop should allow a comment (with a space before it) after opening brace.

[bbatsov]

Same problem exists for array literals:

a = [ # comment
  1,
  2,
  3
]