[BUG] The response does not return any values about 'Vulnerability assessment for machines' component

### API Spec link

https://learn.microsoft.com/en-us/rest/api/defenderforcloud/pricings/list?view=rest-defenderforcloud-2024-01-01&tabs=HTTP#code-try-0

### API Spec version

2024-01-01

### Describe the bug

The response does not return any values about 'Vulnerability assessment for machines' component. It has only AgentlessVmScanning, but I want to receive information about Vulnerability assessment for machines status. Please add this property.

### Expected behavior

[
{
"id": "/subscriptions/9fafec62-0f51-41df-be3c-72e6a9b46431/providers/Microsoft.Security/pricings/VirtualMachines",
"name": "VirtualMachines",
"type": "Microsoft.Security/pricings",
"properties": {
"pricingTier": "Standard",
"subPlan": "P2",
"freeTrialRemainingTime": "P0D",
"enablementTime": "2024-11-28T17:31:27.431819Z",
"resourcesCoverageStatus": "FullyCovered",
"extensions": [
{
"name": "MdeDesignatedSubscription",
"isEnabled": "False"
},
{
"name": "AgentlessVmScanning",
"isEnabled": "True",
"additionalExtensionProperties": {
"ExclusionTags": "[]"
}
},
{
"name": "FileIntegrityMonitoring",
"isEnabled": "False"
},
{
**"name": "VulnerabilityAssessment",
"isEnabled": "False"**
}
]
}
}
]

### Actual behavior

[
{
"id": "/subscriptions/9fafec62-0f51-41df-be3c-72e6a9b46431/providers/Microsoft.Security/pricings/VirtualMachines",
"name": "VirtualMachines",
"type": "Microsoft.Security/pricings",
"properties": {
"pricingTier": "Standard",
"subPlan": "P2",
"freeTrialRemainingTime": "P0D",
"enablementTime": "2024-11-28T17:31:27.431819Z",
"resourcesCoverageStatus": "FullyCovered",
"extensions": [
{
"name": "MdeDesignatedSubscription",
"isEnabled": "False"
},
{
"name": "AgentlessVmScanning",
"isEnabled": "True",
"additionalExtensionProperties": {
"ExclusionTags": "[]"
}
},
{
"name": "FileIntegrityMonitoring",
"isEnabled": "False"
}
]
}
}
]

### Reproduction Steps

Simple list operation.

### Environment

_No response_

Start with the linked Defender for Cloud pricings API specification for version 2024-01-01 and inspect the List operation's VirtualMachines response schema. Compare the documented extensions with the expected VulnerabilityAssessment entry, then verify that the schema represents this property without removing existing extensions.

Written by the indexing model from the issue text.