fix(generatedAnswer): map state with answerAPI

[dmgauthier]

SVCC-4353
https://coveord.atlassian.net/browse/SVCC-4353

See #4681 for the V3 PR. 🍝 Copy pasta of the description 👇

The problem

Upon interacting with a stream response, all headless selectors relying on the generatedAnswer slice after a response fetched by the answerAPI client aren't working properly because the state of the answerAPI client is not mapped to the actual generatedAnswer slice.
e.g. the custom events

The proposed fix

The answer API client is now dispatching what is relevant to the generatedAnswer state. The selectors will then return the same value as the generated answer controller state whenever it gets its answer from the client getting its answer directly from reveal or from the answer api.

[github-actions]

Pull Request Report

PR Title

✅ Title follows the conventional commit spec.

Live demo links

• Storybook

• Playwright report

Bundle Size

File	Old (kb)	New (kb)	Change (%)
case-assist	244.5	248.7	1.7
commerce	343.2	347.4	1.2
search	417.5	417.6	0
insight	395.3	395.4	0
product-listing	306.9	311.1	1.4
product-recommendation	215.3	221.4	2.8
recommendation	257.7	261.9	1.6
ssr	407.9	408	0
ssr-commerce	353.8	358	1.2

SSR Progress

Use case	SSR (#)	CSR (#)	Progress (%)
search	39	44	89
recommendation	0	4	0
product-recommendation	0	10	0
product-listing	0	13	0
case-assist	0	6	0
insight	0	27	0
commerce	0	15	0

Detailed logs

search : buildInteractiveResult
search : buildInteractiveInstantResult
search : buildInteractiveRecentResult
search : buildInteractiveCitation
search : buildGeneratedAnswer
recommendation : missing SSR support
product-recommendation : missing SSR support
product-listing : missing SSR support
case-assist : missing SSR support
insight : missing SSR support
commerce : missing SSR support