Missing support for validity start date from vc data-model-v2.0

[mikeplotean]

Describe the bug
The verifier-api NotBeforeDatePolicy doesn't cover the cases for credentials with validFrom property, which, according to the spec, is the new name for issuanceDate.

To Reproduce
Steps to reproduce the behavior:

1. Go to issuer-api
2. Generate credential-offer (using vc-sample.json from below)
3. Claim credential with wallet-api
4. Go to verifier-api
5. Generate presentation-request (using vp-sample.json from below)
6. Perform presentation with wallet-api

Expected behavior

• popup shows presentation failed
• status code 400

Actual behavior

• popup shows presentation successful
• status code 200

Environment

• dev: https://verifier.portal.walt-test.cloud
• prod: https://verifier.portal.walt.id
• local

Additional context
vc-sample.json

{
    "issuerKey":
    {
        "type": "jwk",
        "jwk":
        {
            "kty": "OKP",
            "d": "mDhpwaH6JYSrD2Bq7Cs-pzmsjlLj4EOhxyI-9DM1mFI",
            "crv": "Ed25519",
            "kid": "Vzx7l5fh56F3Pf9aR3DECU5BwfrY6ZJe05aiWYWzan8",
            "x": "T3T4-u1Xz3vAV2JwPNxWfs4pik_JLiArz_WTCvrCFUM"
        }
    },
    "issuerDid": "did:key:z6MkjoRhq1jSNJdLiruSXrFFxagqrztZaXHqHGUTKJbcNywp",
    "credentialConfigurationId": "OpenBadgeCredential_jwt_vc_json",
    "credentialData":
    {
        "@context":
        [
            "https://www.w3.org/2018/credentials/v1",
            "https://purl.imsglobal.org/spec/ob/v3p0/context.json"
        ],
        "id": "urn:uuid:THIS WILL BE REPLACED WITH DYNAMIC DATA FUNCTION (see below)",
        "type":
        [
            "VerifiableCredential",
            "OpenBadgeCredential"
        ],
        "name": "JFF x vc-edu PlugFest 3 Interoperability",
        "issuer":
        {
            "type":
            [
                "Profile"
            ],
            "id": "did:key:THIS WILL BE REPLACED WITH DYNAMIC DATA FUNCTION FROM CONTEXT (see below)",
            "name": "Jobs for the Future (JFF)",
            "url": "https://www.jff.org/",
            "image": "https://w3c-ccg.github.io/vc-ed/plugfest-1-2022/images/JFF_LogoLockup.png"
        },
        "validFrom": "2025-07-20T07:05:44Z",
        "credentialSubject":
        {
            "id": "did:key:123 (THIS WILL BE REPLACED BY DYNAMIC DATA FUNCTION (see below))",
            "type":
            [
                "AchievementSubject"
            ],
            "achievement":
            {
                "id": "urn:uuid:ac254bd5-8fad-4bb1-9d29-efd938536926",
                "type":
                [
                    "Achievement"
                ],
                "name": "JFF x vc-edu PlugFest 3 Interoperability",
                "description": "This wallet supports the use of W3C Verifiable Credentials and has demonstrated interoperability during the presentation request workflow during JFF x VC-EDU PlugFest 3.",
                "criteria":
                {
                    "type": "Criteria",
                    "narrative": "Wallet solutions providers earned this badge by demonstrating interoperability during the presentation request workflow. This includes successfully receiving a presentation request, allowing the holder to select at least two types of verifiable credentials to create a verifiable presentation, returning the presentation to the requestor, and passing verification of the presentation and the included credentials."
                },
                "image":
                {
                    "id": "https://w3c-ccg.github.io/vc-ed/plugfest-3-2023/images/JFF-VC-EDU-PLUGFEST3-badge-image.png",
                    "type": "Image"
                }
            }
        }
    },
    "mapping":
    {
        "id": "<uuid>",
        "issuer":
        {
            "id": "<issuerDid>"
        },
        "credentialSubject":
        {
            "id": "<subjectDid>"
        }
    }
}

vp-sample.json

{
    "vc_policies":
    [
        "not-before"
    ],
    "request_credentials":
    [
        "OpenBadgeCredential"
    ]
}