clang-format: [JavaScript] Undo r291974 for JavaScript.

This had significant negative consequences and I don't have a good
solution for it yet.

Before:
  var string =
      [
        'aaaaaa',
        'bbbbbb',
      ]
          .join('+');

After:
  var string = [
    'aaaaaa',
    'bbbbbb',
  ].join('+');

llvm-svn: 293465