### Godot version

72b59325cf7beba7e6e9170cf6023a079fd58672

### System information

Windows 11, 22H2

### Issue description

There is an error emitting at editor and project startup: 
![image](https://github.com/godotengine/godot/assets/3036176/18062a93-3243-410e-8fb3-645dea184aea)

Looks like a regression after https://github.com/godotengine/godot/pull/76836, (it's happening on Windows after instalment by default). There should be a way to fix it, either by disable that error or providing a link where that certificate can be downloaded and installed.

### Steps to reproduce

Simply run any project or editor.

### Minimal reproduction project

No need, too easy to reproduce.
ERR_FAIL_COND(default_certs != nullptr);
	default_certs = memnew(X509CertificateMbedTLS);
	ERR_FAIL_COND(default_certs == nullptr);
	if (!p_path.is_empty()) {
		
		default_certs->load(p_path);
	} else {
		
		String system_certs = OS::get_singleton()->get_system_ca_certificates();
		if (!system_certs.is_empty()) {
			CharString cs = system_certs.utf8();
			default_certs->load_from_memory((const uint8_t *)cs.get_data(), cs.size());
			print_verbose("Loaded system CA certificates");
		}
#ifdef BUILTIN_CERTS_ENABLED
		else {
			
			PackedByteArray certs;
			certs.resize(_certs_uncompressed_size + 1);
			Compression::decompress(certs.ptrw(), _certs_uncompressed_size, _certs_compressed, _certs_compressed_size, Compression::MODE_DEFLATE);
			certs.write[_certs_uncompressed_size] = 0; 
			default_certs->load_from_memory(certs.ptr(), certs.size());
			print_verbose("Loaded builtin CA certificates");
		}
#endif
	}
}
Ref<CryptoKey> CryptoMbedTLS::generate_rsa(int p_bytes) {