Backported bug fixes to 15.5.19, excluding new canary features
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TypeScript updates in 2026-w23
Backported numerous bug fixes across core, Playwright integration, dev-mode hydration, router query handling, cache tag encoding, server action rewrites, Turbopack hash encoding, FormData handling, module type handling, and adapter regio...
Fixed missing FormData entries in Server Actions for React Server Components.
Fix regression in React Server Components where FormData entries were missing in Server Actions
Fixed missing FormData entries in Server Actions.
Increase Buffer.poolSize default to 64 KiB and add new Buffer‑related improvements; introduce httpValidation option for stricter header validation and permission.drop API; upgrade crypto root certificates to NSS 3.123.1, harden WebCrypto...