Cipher configuration test fails on iOS

```
thread 'secure_transport::test::cipher_configuration' panicked at 'assertion failed: `(left == right)` (left: `[TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, TLS_DHE_RSA_WITH_AES_128_GCM_SHA256]`, right: `[TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_NULL_WITH_NULL_NULL, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, TLS_NULL_WITH_NULL_NULL, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_NULL_WITH_NULL_NULL, TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_NULL_WITH_NULL_NULL]`)', security-framework/src/secure_transport.rs:1120
note: Run with `RUST_BACKTRACE=1` for a backtrace.
```

Start with the failing secure_transport::test::cipher_configuration test and the assertion at security-framework/src/secure_transport.rs:1120. Run the test on iOS and compare the observed cipher list with the expected values shown in the failure. Done means the iOS cipher-configuration test passes with the correct platform-specific result.

Written by the indexing model from the issue text.