[BUG] Microsoft.Network - privateEndpoint - GET Private Endpoint : etag, isIPv6EnabledPrivateEndpoint -- additional properties

### API Spec link

https://github.com/Azure/azure-rest-api-specs/blob/main/specification/network/resource-manager/Microsoft.Network/stable/2023-11-01/privateEndpoint.json

### API Spec version

2023-11-01, 2024-03-01

### Describe the bug

As example [PrivateEndpointGet.json](https://github.com/Azure/azure-rest-api-specs/blob/main/specification/network/resource-manager/Microsoft.Network/stable/2023-11-01/examples/PrivateEndpointGet.json), response describing a resource, it should be without:
`etag`
`properties.isIPv6EnabledPrivateEndpoint`
`properties.privateLinkServiceConnections[0].etag`

There are also examples in Azure REST API for [Private Endpoints - Get](https://learn.microsoft.com/en-us/rest/api/virtualnetwork/private-endpoints/get). Found with [Microsoft.Network/privateEndpoints](https://learn.microsoft.com/en-us/azure/templates/microsoft.network/privateendpoints) ARM template/Bicep description.

Additional `properties.isIPv6EnabledPrivateEndpoint` has an impact on WhatIf Bicep operation, as showing as a Bicep difference/change.

### Expected behavior

``` json
{
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/privateEndpoints/mystorageacc-blob-pe",
"location": "europe",
"name": "mystorageacc-blob-pe",
"properties": {
"customDnsConfigs": [],
"customNetworkInterfaceName": "",
"ipConfigurations": [],
"manualPrivateLinkServiceConnections": [],
"networkInterfaces": [
{
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/networkInterfaces/mystorageacc-blob-pe.nic.2f1f0c13-1055-4a66-8bc0-0e4e603a4a63"
}
],
"privateLinkServiceConnections": [
{
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/privateEndpoints/mystorageacc-blob-pe/privateLinkServiceConnections/mystorageacc-link",
"name": "mystorageacc-link",
"properties": {
"groupIds": [
"blob"
],
"privateLinkServiceConnectionState": {
"actionsRequired": "None",
"description": "Auto-Approved",
"status": "Approved"
},
"privateLinkServiceId": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-second-rg/providers/Microsoft.Storage/storageAccounts/mystorageacc",
"provisioningState": "Succeeded"
},
"type": "Microsoft.Network/privateEndpoints/privateLinkServiceConnections"
}
],
"provisioningState": "Succeeded",
"resourceGuid": "111aaa11-11a1-11a1-a1a1-a111e111a11a",
"subnet": {
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-second-rg/providers/Microsoft.Network/virtualNetworks/my-vnet-hub/subnets/MyFirstSubnet"
}
},
"type": "Microsoft.Network/privateEndpoints"
}
```

### Actual behavior

``` json
{
"etag": "W/\"111ttt11-11t1-11t1-t1t1-t111e111t11t\"",
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/privateEndpoints/mystorageacc-blob-pe",
"location": "europe",
"name": "mystorageacc-blob-pe",
"properties": {
"customDnsConfigs": [],
"customNetworkInterfaceName": "",
"ipConfigurations": [],
"isIPv6EnabledPrivateEndpoint": false,
"manualPrivateLinkServiceConnections": [],
"networkInterfaces": [
{
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/networkInterfaces/mystorageacc-blob-pe.nic.2f1f0c13-1055-4a66-8bc0-0e4e603a4a63"
}
],
"privateLinkServiceConnections": [
{
"etag": "W/\"111ttt11-11t1-11t1-t1t1-t111e111t11t\"",
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/privateEndpoints/mystorageacc-blob-pe/privateLinkServiceConnections/mystorageacc-link",
"name": "mystorageacc-link",
"properties": {
"groupIds": [
"blob"
],
"privateLinkServiceConnectionState": {
"actionsRequired": "None",
"description": "Auto-Approved",
"status": "Approved"
},
"privateLinkServiceId": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-second-rg/providers/Microsoft.Storage/storageAccounts/mystorageacc",
"provisioningState": "Succeeded"
},
"type": "Microsoft.Network/privateEndpoints/privateLinkServiceConnections"
}
],
"provisioningState": "Succeeded",
"resourceGuid": "111aaa11-11a1-11a1-a1a1-a111e111a11a",
"subnet": {
"id": "/subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-second-rg/providers/Microsoft.Network/virtualNetworks/my-vnet-hub/subnets/MyFirstSubnet"
}
},
"type": "Microsoft.Network/privateEndpoints"
}
```

### Reproduction Steps

`az rest --method get --header "Accept=application/json" --url 'https://management.azure.com//subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/privateEndpoints/mystorageacc-blob-pe?api-version=2023-11-01'`
||
GET `https://management.azure.com//subscriptions/aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb/resourceGroups/my-rg/providers/Microsoft.Network/privateEndpoints/mystorageacc-blob-pe?api-version=2023-11-01`

also with `api-version=2024-03-01`

### Environment

_No response_