DC-452: route Socure rejects to the off-boarding screen to try again

[necampanini]

PR Description

🔗 Jira ticket

DC-452

✍️ Description

When Socure rejects a user's identity verification, they now land on the generic "We want to keep your account safe" off-boarding screen, which gains a new "Continue" primary action next to "Enter an ID number" (both return to the ID-proofing form). The webhook-reject screen that previously showed distinct "We couldn't verify your identity" copy now routes to this same screen. The accepted-ID list and the "you may be able to skip this step" note are always shown on this screen and rendered as a bulleted list to match the design. RESUBMIT verdicts are unchanged and keep the existing inline "Try Again" retry.

🔗 Links to related PRs

• none

✅ Completion tasks

• Added relevant tests
• Meets acceptance criteria in ticket
• Configuration changes:
  • If new environment variables are added, update in Tofu
  • If new environment secrets are added, update in Tofu and set in AWS Secret Manager
  • If you're adding an appsetting, add it to the requisite example file, and update it in the AWS AppConfig
  • If appsetttings are changed, update in AWS AppConfig

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Priority Review Table

Priority	File	Unit	Sec	Cpx	Nov	Notes
🟡	app/(public)/login/id-proofing/off-boarding/page.tsx	OffBoardingPage reason branching	Low	Med	Low	reject routing changed
🟢	features/auth/components/id-proofing/OffBoardingContent.tsx	OffBoardingContent	Low	Low	Low	additive props
🟢	features/auth/components/doc-verify/DocVerifyPage.tsx	comment only	Low	Low	Low	no behavior change
🟢	app/(public)/login/id-proofing/off-boarding/page.test.tsx	tests	Low	Low	Low
🟢	features/auth/components/id-proofing/OffBoardingContent.test.tsx	tests	Low	Low	Low