crypto: replace CHECK with NULL checks for EVP_CIPHER_CTX_new allocations

[Jah-yee]

Good day

This PR addresses issue #62774, which identifies missing NULL checks for OpenSSL allocation functions in the Node.js crypto module.

Changes

src/crypto/crypto_aes.cc

In the `AES_Cipher` function, replaced `CHECK(ctx)` with a proper NULL check:

```cpp
auto ctx = CipherCtxPointer::New();
if (!ctx) {
return WebCryptoCipherStatus::FAILED;
}
```

src/crypto/crypto_cipher.cc

In the `CipherBase::CommonInit` function, replaced `CHECK(ctx_)` with a proper error throw:

```cpp
ctx_ = CipherCtxPointer::New();
if (!ctx_) {
return ThrowCryptoError(env(),
mark_pop_error_on_return.peekError(),
"EVP_CIPHER_CTX_new");
}
```

Why These Changes

The `CHECK()` macro is an assertion that calls `abort()` on failure. This is not appropriate for recoverable allocation failures (such as out-of-memory conditions). The new code:

1. Checks for NULL after `EVP_CIPHER_CTX_new()` allocation
2. Returns a proper error status (`WebCryptoCipherStatus::FAILED` or `ThrowCryptoError`)
3. Follows the same pattern already used in `AES_CTR_Cipher2` in the same file

This makes the code consistent with the rest of the codebase and handles allocation failures gracefully instead of crashing.

Thank you for your attention. If there are any issues or suggestions, please leave a comment and I will address them promptly.

Warmly,
RoomWithOutRoof

[nodejs-github-bot]

Review requested:

• @nodejs/crypto

[codecov]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.68%. Comparing base (58a8e1d) to head (b7db0e3).

Files with missing lines	Patch %	Lines
src/crypto/crypto_cipher.cc	0.00%	2 Missing and 1 partial ⚠️
src/crypto/crypto_aes.cc	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62816      +/-   ##
==========================================
- Coverage   89.69%   89.68%   -0.02%     
==========================================
  Files         706      706              
  Lines      218222   218225       +3     
  Branches    41768    41766       -2     
==========================================
- Hits       195731   195709      -22     
- Misses      14411    14417       +6     
- Partials     8080     8099      +19     

Files with missing lines	Coverage Δ
src/crypto/crypto_aes.cc	53.63% <0.00%> (-0.54%)	⬇️
src/crypto/crypto_cipher.cc	77.13% <0.00%> (-0.31%)	⬇️

... and 30 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.