Fix Hmis::File duplicate versions regression

[gigxz]

Merging this PR

• use the squash-merge strategy

Description

Fix bug introduced to release-139 by https://github.com/greenriver/hmis-warehouse/pull/4857/files#r1819961086 whereby duplicate PaperTrail versions were created for Hmis::Files, because has_paper_trail was defined on the parent class too. This is currently causing test failures on CI.

See linked comment for full context

Type of change

Bug fix

Checklist before requesting review

• I have performed a self-review of my code
• I have run the code that is being changed under ideal conditions, and it doesn't fail
• If adding a new endpoint / exposing data in a new way, I have:
  • ensured the API can't leak data from other data sources
  • ensured this does not introduce N+1s
  • ensured permissions and visibility checks are performed in the right places
• I have updated the documentation (or not applicable)
• I have added spec tests (or not applicable)
• I have provided testing instructions in this PR or the related issue (or not applicable)

[eanders]

@gigxz I think this is less intrusive, and actually what we wanted.
#4874
The base File class gets inherited from for a bunch of report files and others that really don't need to have paper trail.

[gigxz]

great @eanders thanks