Since SERVER-99351, the FCV-gated feature flags API takes two required parameters:

• A VersionContext&, which holds the Operation FCV of the operation, if any.
• A snapshot of the server's global FCV, used when no Operation FCV is present.

This makes the API for checking FCV-gated feature flags verbose. A typical check looks like:

if (feature_flags::gFeatureFlagToaster.isEnabled(
        VersionContext::getDecoration(opCtx),
        serverGlobalParams.featureCompatibility.acquireFCVSnapshot())) {
    // The feature flag is enabled
}

We should provide a less verbose alternative. For example:

if (feature_flags::gFeatureFlagToaster.isEnabled(
        VersionContext::getDecoration(opCtx)->withAcquiredFCVSnaphot())) {
    // The feature flag is enabled
}

Where VersionContext::withAcquiredFCVSnaphot returns a struct with both VersionContext and FCVSnapshot.