Expose important CSPRNG: crypto.getRandomValues

RN does not support globalThis.crypto. It's understandable, the module is huge.

There is no need in re-implementing the whole crypto module. Just one function: crypto.getRandomValues. The function exposes CSPRNG (cryptographically secure pseudorandom number generator). The function is critical to MANY apps which are not even related to deep tech.

It's important for one reason: without exposing the function, many people will go path of least resistance and simply switch to Math.random() which is PRNG, but not cryptographically secure. This has happened in the past and apps have been broken with catastrophic results: https://www.deepsource.com/blog/dont-use-math-random, https://owasp.org/www-community/vulnerabilities/Insecure_Randomness, https://blog.ledger.com/Funds-of-every-wallet-created-with-the-Trust-Wallet-browser-extension-could-have-been-stolen/

I write popular cryptographic libraries. Everything else is easily polyfillable. ed25519, sha3, pbkdf2, whatever. The CSPRNG is not easily polyfillable: it exposes low-level system interface. You cannot emulate or simulate this.