feat: DAH-4037 I2I response pages

[cliu02]

Description

Continued I2I/I2A refactoring and response pages frontend.

Note: this PR builds on #2862

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Jira ticket

https://sfgovdt.jira.com/browse/DAH-4037

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Wiz Scan Summary

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[Copilot]

Pull request overview

Continues the Invite-to-Interview (I2I) / Invite-to-Apply (I2A) refactor by standardizing URL params (inviteAction, type), consolidating shared UI into a new InviteToLayout, and adding the new I2I “Next Steps” response page flow while updating the backend message service method naming.

Changes:

• Renames/refactors backend messaging entrypoints from send_invite_to_response to send_invite_to_apply_response and updates controller/spec call sites.
• Refactors Invite-to React pages into shared components (InviteToLayout, shared withdrawn/contact pages) and adds InviteToInterviewNextSteps.
• Updates routing/link generation to carry type and switches frontend to the new inviteAction param + INVITE_TO_X enum.

Reviewed changes

Copilot reviewed 24 out of 25 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
spec/services/dahlia_backend/message_service_spec.rb	Updates specs for renamed messaging methods.
spec/controllers/invite_to_controller_spec.rb	Updates controller spec params to inviteAction, adjusts expectations, leaves TODO blocks.
spec/controllers/api/v1/invite_to_response_controller_spec.rb	Updates API controller spec to use renamed messaging method.
app/services/dahlia_backend/message_service.rb	Renames invite-to messaging method and adjusts endpoint selection / field prep.
app/controllers/invite_to_controller.rb	Refactors params to inviteAction and renames upload URL prop to url; token decode currently commented out.
app/controllers/api/v1/invite_to_response_controller.rb	Updates API to call renamed messaging method.
app/javascript/util/routeUtil.ts	Updates generateSubmitLink to include type in querystring when no token is used.
app/javascript/util/listingUtil.ts	Updates comment to “I2X deadlines”.
app/javascript/pages/inviteTo/invite-to.tsx	Main Invite-to router refactor: INVITE_TO_X, inviteAction, I2I gating via Unleash variant JSON payload.
app/javascript/pages/inviteTo/InviteToLayout.tsx	New shared layout for I2A/I2I next steps pages.
app/javascript/pages/inviteTo/inviteToApply/InviteToApplyNextSteps.tsx	Refactors I2A next steps to use InviteToLayout + unified recordResponse API.
app/javascript/pages/inviteTo/inviteToInterview/InviteToInterviewNextSteps.tsx	New I2I next steps page with scheduling CTA + recordResponse.
app/javascript/pages/inviteTo/InviteToWithdrawn.tsx	New shared withdrawn page supporting I2A/I2I content.
app/javascript/pages/inviteTo/InviteToContactMeLater.tsx	New shared contact-me-later / waitlist page supporting I2A/I2I content.
app/javascript/pages/inviteTo/InviteToLeasingAgentInfo.tsx	Renames shared leasing agent info component.
app/javascript/pages/inviteTo/InviteToDeadlinePassed.tsx	Updates import for renamed leasing agent info component.
app/javascript/modules/constants.tsx	Adds INVITE_TO_X enum (I2A, I2I).
app/javascript/api/types/rails/listings/BaseRailsListing.d.ts	Adds optional Leaseup_Appointment_Scheduling_URL.
app/javascript/api/inviteToApiService.ts	Keeps unified recordResponse API (removes outdated comment).
app/javascript/tests/pages/invite-to-interview.test.tsx	Updates and expands I2I page tests for new flow.
app/javascript/tests/pages/invite-to-apply.test.tsx	Updates I2A tests for inviteAction + INVITE_TO_X + type in preview link.
app/javascript/tests/api/inviteToApplyApiService.test.ts	Updates test to target inviteToApiService (filename now mismatched).
app/assets/json/translations/react/en.json	Updates I2I deadline info string formatting.

Comments suppressed due to low confidence (1)

app/javascript/pages/inviteTo/inviteToApply/InviteToApplyNextSteps.tsx:86

• handleSubmitClick opens the upload URL before the API call and then opens it again in the catch, which will create duplicate tabs/windows on failures. Also, url can be undefined if neither fileUploadUrl nor listing.File_Upload_URL is present, which will open a blank tab. Add a guard for missing URL and ensure the link is opened only once.

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