fix(ep): remove actionCause for fetchFacetValues

[louis-bompart]

https://coveord.atlassian.net/browse/KIT-3401

[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	244.9	244.9	0
commerce	341.1	341.1	0
search	413.5	413.5	0
insight	392.3	392.1	0
product-listing	306.9	306.9	0
product-recommendation	211.2	211.2	0
recommendation	258	258	0
ssr	404.8	404.8	0

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