Attachments page: verification statement logic

[pbastia]

Describe the task

Right now the verification statement is required no matter what, but that logic will need to be amended to be the real one
Followup to #445

Acceptance Criteria

Given I am an industrial reporter
And my reporting circumstances require that I submit a verification statement
When I am on the Attachments page
Then I can't submit the page until I have uploaded a file in the verification statement form.

Given I am an industrial reporter
And my reporting circumstances DOES NOT require that I submit a verification statement
When I am on the Attachments page
Then I can submit the page without an uploaded a file in the verification statement form.

Development Checklist:

• In file bciers/apps/reporting/src/app/components/attachments/AttachmentsPage.tsx implement getReportNeedsVerification() using response value for AttachmentForm prop isVerificationStatementMandatory
• Update AttachmentPage vitest

Additional context

• Add any other context about the task here.
• Or here

[rdromey]

@shon-button to write dev checklist + AC

[shon-button]

@patriciarussellCAS

This should be tested with release v1.18.0 - after the refactor of conditions for when to display or not addressed in PR 2625

PR Test Steps
Replace http://localhost:3000/ with https://cas-bciers-frontend-dev.apps.silver.devops.gov.bc.ca/