Random::fill not implemented in runtime (typescript)

[reilly-freret]

the fill method is defined here,

// src/server/rng.ts
export interface Random {
// ...
  /**
   * Like `crypto.getRandomValues()`. Fills a `TypedArray` with random integers
   * in a uniform distribution, mutating and returning it.
   */
  fill<T extends IntArray>(array: T): T;
// ...
}

but at runtime, we see Uncaught TypeError: ctx.random.fill is not a function