VCert CLI doesn't support enroll certificates with EC Keys using --no-prompt flag

[luispresuelVenafi]

PROBLEM SUMMARY
Currently VCert doesn't support the case to enroll a certificate key-pair (Certificate and Private Key) using Elliptic algorithm by using a --no-prompt flag, in other words, not providing a password. This works well with RSA Keys, so we should have parity usability in this case. This happens on both "service" and "local" generated key-pairs

STEPS TO REPRODUCE
vcert enroll -u https://redacted -t redacted_token -z redacted_ecc_zone --cn luis.presuel.venafi.example --key-type ecdsa --key-curve p521 --csr service --trust-bundle /path/to/bundle.pem --no-prompt

EXPECTED RESULTS
No issue at the end and certificate

ACTUAL RESULTS

vCert: 2023/11/08 10:00:15 Detected trust bundle flag at CLI.
vCert: 2023/11/08 10:00:15 You specified a trust bundle.
vCert: 2023/11/08 10:00:15 Successfully connected to Trust Protection Platform
vCert: 2023/11/08 10:00:16 Successfully read zone configuration for redacted_ecc_zone
vCert: 2023/11/08 10:00:16 Successfully created request for luis.presuel.venafi.example
vCert: 2023/11/08 10:00:18 Successfully posted request for luis.presuel.venafi.example, will pick up by redacted_ecc_zone\luis.presuel.venafi.example
vCert: 2023/11/08 10:00:24 Successfully retrieved request for redacted_ecc_zone\luis.presuel.venafi.example
vCert: 2023/11/08 10:00:24 pkcs8: only PKCS #5 v2.0 supported

ENVIRONMENT DETAILS
VCert version 5.2.0, TPP 23.1 and 22.3

COMMENTS/WORKAROUNDS
There's no direct work around as providing an empty string in the "key-password flag will result in VCert asking a prompt to introduce a password.

vcert enroll -u https://redacted -t redacted_token -z redacted_ecc --cn luis.presuel.venafi.example --key-type ecdsa --key-curve p521 --csr service --trust-bundle /pasth/totest.pem --key-password ""
Enter key passphrase:
vCert: 2023/11/08 10:14:30 Failed to read password from input: interrupted

The best would to provide a password and the remove it with openssl, but this beats the purpose to have VCert to ease this.