Update missing form status job to inspect batches rather than individual records - IVC CHAMPVA

[michaelclement]

Summary

This PR updates the IVC CHAMPVA missingFormStatusJob periodic job so that in the event of failure emails needing to be sent to users, users only get a single email for a multi-file submission rather than an individual email for each file in the submission.

• This work is behind a feature toggle (flipper): NO
• Changes:
  • Added new helper function to retrieve forms by missing pega_status and group them into batches by UUID
• This was done so that inspection is performed at the batch level rather than inspecting all constituent files that make up a form submission.
• Team: IVC CHAMPVA

Related issue(s)

• Improve MissingFormStatusJob va.gov-team#104036

Testing done

• New code is covered by unit tests
• Prior to this change we queried for individual form records that had a pega_status of nil. Then we would send an email for each of those records, even if they were part of a larger form submission.
• To verify this new behavior, new unit tests were added to ensure new functionality was covered. Additionally, this was tested in the staging environment where emails were confirmed to be sent as expected.

Screenshots

NA

What areas of the site does it impact?

(Describe what parts of the site are impacted andifcode touched other areas)

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)
• 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

Requested Feedback

NA