Fix versionedNotulen never fetching filecontent

[abeforgit]

Overview

connected issues and PRs:

Most work in lblod/notulen-prepublish-service#118
Jira: GN-5226

Setup

checkout and mount lblod/notulen-prepublish-service#118

  prepublish:
    restart: "no"
    ports:
      # for chrome's node debugger if you want
      - "4391:9229" 
    environment:
      NODE_ENV: development
    volumes:
      - ../notulen-prepublish-service/:/app

How to test/reproduce

I initially thought this bug means that the second signature would just never work, but that seems to not be the case. Which means we still don't know how linkebeek ended up in the state where they have multiple documents for one signed resource.

However, the bug is still problematic in that it generates a new filecontent for every signed resource, rather than linking the same file to both signed resources. This is still ugly data, and it's only legally ok if both files have exactly identical content. AFAICT they do, but it's risky anyway.

Challenges/uncertainties

Checks PR readiness

• changelog
• no new deprecations