Bug: Cognitive Services lists incorrect Private Endpoint Connection Name

When listing the private endpoint connections for a Cognitive Services resource, the returned name is incorrectly including the Cognitive Services Account name.

# Sample Request

```
GET /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.CognitiveServices/accounts/{accountName}/privateEndpointConnections?api-version=2021-04-30
```

# Expected Result
```json
{
"value": [
{
"id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.CognitiveServices/accounts/{accountName}/privateEndpointConnections/{privateEndpointConnectionName}",
"name": "{privateEndpointConnectionName}",
"type": "Microsoft.CognitiveServices/accounts/privateEndpointConnections",
"properties": {
"privateEndpoint": {
"id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/privateEndpoints/{privateEndpointName}"
},
"privateLinkServiceConnectionState": {
"status": "Approved",
"description": "Auto-Approved",
"actionsRequired": "None"
}
}
}
]
}
```

# Actual Result

```json
{
"value": [
{
"id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.CognitiveServices/accounts/{accountName}/privateEndpointConnections/{privateEndpointConnectionName}",
"name": "{accountName}/{privateEndpointConnectionName}", <-- Problem is here
"type": "Microsoft.CognitiveServices/accounts/privateEndpointConnections",
"properties": {
"privateEndpoint": {
"id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/privateEndpoints/{privateEndpointName}"
},
"privateLinkServiceConnectionState": {
"status": "Approved",
"description": "Auto-Approved",
"actionsRequired": "None"
}
}
}
]
}
```

Start at the Cognitive Services private endpoint connections response for api-version=2021-04-30, using the sample request and expected result as the contract. Verify that each returned name contains only the private endpoint connection name, while the resource ID and other properties remain unchanged.

Written by the indexing model from the issue text.