Saving an "invalid" embargo date creates internal server error and breaks record draft

[ghost]

Package version (if known): v12.0.5 demonstrator instance - https://inveniordm.web.cern.ch

Describe the bug

Filling in an (invalid?) embargo date creates an internal server error and thereafter the record draft is broken.

Steps to Reproduce

1. Go to: Record draft
2. Fill in all required fields (meta-data-only, need a doi, ...)
3. Add Embargo date "0201-01-01"
4. Save record
5. See "Internal server error" banner
6. Leave page
7. Find your draft in your records overview
8. Click on it
9. Get "Internal server error" page

Expected behavior

Wrong embargo date inputs shouldn't break the record (draft)

Additional context

• If the record was already published, you add then an invalid embargo-date the record is fine, but the "edit"-Button isn't working anymore "The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application."

• How did I get to this date:

  • There is a text field above the embargo-date: "On ??? ..."
    
  • which changes with the input: "On Invalid DateTime ..."
    
  • when entering 0200 it shows a valid date: "On January 1, 200 ..."
    
  • and I saved one of these "valid dates"

• for people with admin-rights on the demonstrator instance:

  • broken draft: https://inveniordm.web.cern.ch/uploads/0eex5-srz51
  • broken published record: https://inveniordm.web.cern.ch/records/j5byb-8sd74
  • feel free to delete them