### 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_V_MSG(ret != 0, nullptr, "Failed to generate certificate: " + itos(ret));
	buf[4095] = '\0'; 
	Ref<X509CertificateMbedTLS> out;
	out.instantiate();
	out->load_from_memory(buf, strlen((char *)buf) + 1); 
	return out;
}
PackedByteArray CryptoMbedTLS::generate_random_bytes(int p_bytes) {
	PackedByteArray out;
	out.resize(p_bytes);
	mbedtls_ctr_drbg_random(&ctr_drbg, out.ptrw(), p_bytes);
	return out;
}
mbedtls_md_type_t CryptoMbedTLS::md_type_from_hashtype(HashingContext::HashType p_hash_type, int &r_size) {
	switch (p_hash_type) {
		case HashingContext::HASH_MD5:
			r_size = 16;
			return MBEDTLS_MD_MD5;
		case HashingContext::HASH_SHA1:
			r_size = 20;
			return MBEDTLS_MD_SHA1;
		case HashingContext::HASH_SHA256:
			r_size = 32;
			return MBEDTLS_MD_SHA256;
		default:
			r_size = 0;
			ERR_FAIL_V_MSG(MBEDTLS_MD_NONE, "Invalid hash type.");
	}
}
Vector<uint8_t> CryptoMbedTLS::sign(HashingContext::HashType p_hash_type, Vector<uint8_t> p_hash, Ref<CryptoKey> p_key) {