`tls.getCACertificates("default")` always returns an empty list when using `--use-openssl-ca`

### Version v26.4.0 ### Platform ```text Linux jvm1 6.17.0-1025-oem #25-Ubuntu SMP PREEMPT_DYNAMIC Fri May 29 12:11:29 UTC 2026 x86_64 GNU/Linux ``` ### Subsystem tls ### What steps will reproduce the bug? 1. Run `NODE_OPTIONS="--use-openssl-ca" node -e 'console.log("Default certificates:", tls.getCACertificates("default")); fetch("https://example.org").then(rsp => console.log("HTTP status code:", rsp.status));'` Its output (provided your default OpenSSL certs are fairly standard) will be: ``` Default certificates: [] HTTP status code: 200 ``` As can be seen, the request to https://example.org succeeds despite us having no default certificates according to `tls.getCACertificates("default")` ### How often does it reproduce? Is there a required condition? Always ### What is the expected behavior? Why is that the expected behavior? I would expect `tls.getCACertificates("default")` to return the certificates provided by OpenSSL that NodeJS uses to verify the certificate chain. I expect this since the documentation for the `"default"` type in `tls.getCACertificates` states: "return the CA certificates that will be used by the Node.js TLS clients by default". ### What do you see instead? An empty array ### Additional information Invoking `tls.setDefaultCACertificates([])` and fetching `https://example.org` afterwards does cause `UNABLE_TO_GET_ISSUER_CERT_LOCALLY`