CHI-3872: Fix 'end chat' not launching the post survey for Aselo webchat

[stephenhand]

Description

Checklist

• Corresponding issue has been opened
• New tests added
• Feature flags added
• Strings are localized
• Tested for chat contacts
• Tested for call contacts

Other Related Issues

None

Verification steps

AFTER YOU MERGE

1. Cut a release tag using the Github workflow. Wait for it to complete and notify in the #aselo-deploys Slack channel.
2. Comment on the ticket with the release tag version AND any additional instructions required to configure an environment to test the changes.
3. Only then move the ticket into the QA column in JIRA

You are responsible for ensuring the above steps are completed. If you move a ticket into QA without advising what version to test, the QA team will assume the latest tag has the changes. If it does not, the following confusion is on you! :-P

[Copilot]

Pull request overview

Fixes the Aselo webchat “End chat” flow so that ending a Conversation correctly triggers the post-chat survey behavior, primarily by using conversationSid and the Twilio Conversations API instead of treating a Conversation SID like a Programmable Chat channel SID.

Changes:

• Webchat UI now sends conversationSid to /endChat (and no longer clears session immediately on “End chat” for finishTask).
• Account-scoped endChat lambda now posts the “user left” system message via Conversations when conversationSid is provided, and uses getWorkspaceSid.
• Channel janitor adds clearer conversation/channel branching and improved logging/guardrails.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
lambdas/account-scoped/src/conversation/endChat.ts	Use conversationSid + Conversations API to send the end-chat message; additional diagnostics around task state/cleanup.
lambdas/account-scoped/src/conversation/chatChannelJanitor.ts	Improve conversation vs channel deactivation branching and logging.
aselo-webchat-react-app/src/sessionDataHandler.ts	Update end-chat payload typing from channelSid to conversationSid.
aselo-webchat-react-app/src/components/endChat/EndChat.tsx	Send conversationSid to /endChat and avoid clearing session during finishTask flow.
aselo-webchat-react-app/src/components/endChat/QuickExit.tsx	Update props to use conversationSid for deferred /endChat request.
aselo-webchat-react-app/src/components/endChat/CloseChatButtons.tsx	Wire conversation.sid into conversationSid props for EndChat/QuickExit.

[stephenhand]

@copilot apply changes based on this feedback

[Copilot]

Fixed in commit 4ead4ef. Updated both deferredRequest('/endChat', ...) test payloads to use conversationSid: 'CH123' instead of channelSid: 'CH123', matching the updated EndChatPayload type.