v3.9.1
feat(core): add `i18n.localeConfigs.translate` + skip translation process if `i18n/<locale>` dir doesn't exist (#11304)
misc: make copyUntypedFiles work for watch mode (#7445)
chore: rename v2.docusaurus.io urls after domain switch + redirect + cleanups (#4490)
chore: simplify TypeScript configs, use TS 5.5 configDir placeholder (#10256)