Js.t obj type in external gets aligned wrong for named args

A picture Code is worth a thousand words:

external make:
  (
    ~prettyLongNameGoesHereBecauseItsDescriptive: (
                                                    'a,
                                                    {
                                                      .
                                                      "handleClick":
                                                        [@bs.meth] (ReactEvent.Mouse.t => unit),
                                                      "handleClick":
                                                        [@bs.meth] (ReactEvent.Mouse.t => unit),
                                                    }
                                                  ) =>
                                                  React.element
  ) =>
  React.element =
  "Hi";

The issue names no source file or test; begin by reproducing the inline Reason external declaration and tracing the formatter entry point for named arguments and nested Js.t/object types. Done means the declaration's alignment is corrected for the shown example and the behavior is covered by a regression test.