pbkdf2 returns predictable uninitialized/zero-filled memory for non-normalized or unimplemented algos

Summary This affects both: 1. Unsupported algos e.g. sha3-256 / sha3-512 / sha512-256 2. Supported but non-normalized algos e.g. Sha256 / Sha512 / SHA1 / sha-1 / sha-256 / sha-512 All of those work correctly in Node.js, but this polyfill silently returns highly predictable ouput Under Node.js onl...