fix(specs): mixed SearchParams and IndexSettings

[shortcuts]

🧭 What and Why

🎟 JIRA Ticket: https://algolia.atlassian.net/browse/DI-1469

Changes included:

reported by @DevinCodes and @Keylor42, some index settings differs from the Go v3 and v4 clients, this made me want to check every IndexSettings and SearchParams we have to see where were the overlaps/mixed/issues.

I took the JavaScript (settings, search params) and Go (settings, search params) clients to do so, and the API reference to double check everything.

also update the CTS to run tests againsts:

• every existing parameters for setSettings
• every existing parameters for search

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[millotp]

looks great ! so much code generated ahah

[shortcuts]

looks great ! so much code generated ahah

Yup I also took the opportunity to improve some types e.g. IndexSettingsAsSearchParamsSemanticSearch was a bit... java-esque to type, SemanticSearch is easier ahah