Unavailable Workflowitem Documents appear in Detail View

[laurenzhonauer]

Description 😯

When viewing the Detail-Page of a Workflow-Item the user can see a list of documents that was attached to the Item.
If this document is, for whatever reason, not available anymore the user still sees a list entry for that missing Item without a name. Also when the user tries to click the download button, a 404 is returned from the Api and the user will get no document. This is confusing for the user

How to reproduce 🕹

Two possibilities

1. Try to view and download documents that were uploaded with version 1.19.0
2. Try to view and download documents that were deleted from storage service

How to Fix

Break up workflowitem information in subproject viewDetail into

• workflowItem - viewSummary - Will represent a list item in the subproject Detail
• workflowItem - viewDetail - Will contain Document

Workflowitem.viewDetail will mark unavailable Documents so the Frontend will be able to show the user that a document is corrupt / not available for download.

Your Environment 🌎

Tech	Version
Frontend	v1.24.0
API	v1.24.0