chore: switch base tsconfig to github.com/tsconfig/bases

[alexprudhomme]

https://coveord.atlassian.net/browse/KIT-2614

Ran into this while trying to do KIT-2611.

• Update the tsconfig extend to a more recent one
• Update the two headless react proejcts to use vite (react scripts is outdated and abandoned, it was causing me problems)

[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	244.1	244.3	0.1
commerce	344.1	344.3	0.1
search	417.8	418.1	0.1
insight	394.5	394.7	0.1
product-listing	308.4	308.6	0.1
product-recommendation	214.9	215.2	0.1
recommendation	257.9	258.1	0.1
ssr	407.8	408	0.1
ssr-commerce	354.7	354.9	0.1

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