feat(headless) Extend internal Generated Answer With Follow Ups controller analytics methods to support follow-up answers

[SimonMilord]

SFINT-6581

IN THIS PR:

• Created overloads for generated answer analytics actions to take an optional answerId parameter which would allow us to support analytics for the followup answers feature. (if an answerId is passed, we send that otherwise we go and get the one in the state (the first answer answerId)
• Added analytics sent with the answerId in the headless-generated-answer-with-follow-ups controller + the headless-core-generated-answer controller.
• Modified the JSDOC to show that the method without the answerId is to be deprecated.
• Added unit tests.
• Created the ticket SFINT-6665 as TODO to clean up the code and to accept a required answerId param in UI-KIT V4

[github-actions]

🔗 Scratch Orgs ready to test this PR:

• ✅ LWS Enabled: Open Org
• ✅ LWS Disabled: Open Org

[Copilot]

Pull request overview

Extends the headless generated-answer analytics plumbing to support follow-up answers by allowing analytics actions/controllers to log events for a specific answerId (instead of always using the head answer ID from state).

Changes:

• Added overloads to generated answer analytics actions to optionally accept an explicit answerId.
• Updated core and follow-ups generated answer controllers to forward answerId when logging like/dislike/copy/citation hover/click analytics.
• Added unit tests covering the new answerId-provided paths for both legacy and next analytics modes.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/headless/src/features/generated-answer/generated-answer-analytics-actions.ts	Adds overloads and resolves answerId from argument or state before building analytics payloads/builders.
packages/headless/src/features/generated-answer/generated-answer-analytics-actions.test.ts	Adds tests verifying analytics builders/payloads use the provided answerId.
packages/headless/src/controllers/knowledge/generated-answer/headless-generated-answer-with-follow-ups.ts	Adds follow-up-aware analytics logging methods and forwards answerId for follow-up events.
packages/headless/src/controllers/knowledge/generated-answer/headless-generated-answer-with-follow-ups.test.ts	Adds tests for delegation vs follow-up analytics dispatch behavior (including citation click/hover).
packages/headless/src/controllers/core/generated-answer/headless-core-generated-answer.ts	Adds overloaded controller APIs and dispatches analytics with optional provided answerId.
packages/headless/src/controllers/core/generated-answer/headless-core-generated-answer.test.ts	Adds tests asserting analytics actions are called with the provided answerId.