Updates Translations and Dependencies

[brianlagunas]

Updates Docusaurus and other core dependencies:

• Upgrades Docusaurus core and related plugins to 3.10.1.
• Refreshes various npm package dependencies, including Algolia search, Babel, and build tools.

Enhances Japanese localization:

• Adds comprehensive Japanese translations for homepage content, AI SDK features, and web SDK descriptions.
• Updates existing Japanese localized strings for sidebar categories and documentation links.
• Introduces the internationalization file for documentation version 1.8.4.
• Adds new English documentation labels for the web sidebar.