[DBEX] Update 0781 PDF fill of evidence & treatment data

[freeheeling]

Summary

• This work is behind a feature toggle (flipper): YES/NO
  • Gated by disability_compensation_sync_modern_0781_flow
• (Summarize the changes that have been made to the platform)
  • Modifies PDF filler logic based on schema changes to the evidence and treatmentProviders attributes
  • Creates helper methods to aggregate attributes – behaviors, evidence and treatmentProviders – and remove falsy values
  • Adds corresponding tests
  • Updates JSON test files with new schema structure and key names
  • Replaces 2 PDF fixtures to account for schema updates
• (If bug, how to reproduce) N/A
• (What is the solution, why is this the solution?)
  • Supports structure of submitted data from vets-website
• (Which team do you work for, does your team own the maintenance of this component?)
  • Disability Benefits Experience Team 2 (dBeX Carbs 🥖), which owns maintenance of all files in this PR
• (If introducing a flipper, what is the success criteria being targeted?) N/A

Related issue(s)

• [0781 PS] Schema updates: supporting evidence & treatment providers va.gov-team#104113

Testing done

• New code is covered by unit tests
• Describe what the old behavior was prior to the change
  • evidence and treatmentProviders form data were initially expected to be submitted in whole, not in subgroupings
• Describe the steps required to verify your changes are working as expected. Exclusively stating 'Specs run' is NOT acceptable as appropriate testing
  • updates to lib/pdf_fill/forms/va210781v2.rb and lib/evss/disability_compensation_form/form0781.rb confirmed expectations met by modifying corresponding JSON fixtures and creating test methods in spec/lib/pdf_fill/forms/va210781v2_spec.rb and spec/lib/evss/disability_compensation_form/form0781_spec.rb
  • file and PDF fill expected output comparison tests of kitchen sink and overflow JSON source data were compared against generated PDF files, replacing PDF files to account for JSON source data updates
• What is the testing plan for rolling out the feature?
  • Rollout will be incremental, once development is complete

What areas of the site does it impact?

• The generation of data to fill PDF form 21-0781

Acceptance criteria

• I fixed|updated|added unit tests and integration tests for each feature (if applicable).
• No error nor warning in the console.
• Events are being sent to the appropriate logging solution
• Documentation has been updated (link to documentation)
  • updated schema
• No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs
• Feature/bug has a monitor built into Datadog (if applicable)
• If app impacted requires authentication, did you login to a local build and verify all authenticated routes work as expected
• I added a screenshot of the developed feature