LSP autocompletion not offering module type in the same file

[woeps]

There is no autocompletion help by the LSP to help with annotating the module type with a module type being a submodule in the same file. (The LSP helps annotating the module type, when the module type from another file is used.)

module type MT = {
  let x: int
  }

module M: //<-- Cursor is here, but LSP will not suggest MT

This may not be the most common case, but could add some convenience.

Note: This behavior was first stated in #902, but was added as a separate issue for transparency.