Performance issues

[IMB11]

This can probably be done during the 1.21.4 updating process.

• Version-related components aren't updating immediately in some cases, need to force a re-render when switching versions - https://vitepress.dev/guide/ssr-compat#clientonly potential fix?
• Investigate whether or not Algolia Search would be better than the current local search. Local search is becoming slow due to many locales and pages. It wasn't really designed for larger documentation. Even the official vitepress documentation (which is very large in itself) uses algolia. Can apply for an open source license (no limits) here: https://docsearch.algolia.com/apply
• Try https://vitepress.dev/guide/mpa-mode, I dont have high hopes that it will work though.