[BUG]syncOnPremPasswords value not applied

### API Spec link

https://github.com/Azure/azure-rest-api-specs/blob/main/specification/domainservices/resource-manager/Microsoft.AAD/stable/2021-05-01/domainservices.json

### API Spec version

2022-12-01

### Describe the bug

The provided value from syncOnPremPasswords is not being applied when initially creating the managed domain.

### Expected behavior

syncOnPremPasswords = "enabled" is being applied and shown enabled in the Azure portal.

### Actual behavior

syncOnPremPasswords = "disabled" is being applied and shown enabled in the Azure portal.

### Reproduction Steps

Done with terraform azapi:
```hcl
resource "azapi_resource" "eds" {
type = "Microsoft.AAD/domainServices@2022-12-01"
name = "DomainName"
location = "West Europe"
parent_id = "rg_id"
body = jsonencode({
properties = {
domainConfigurationType = var.domain_configuration_type
domainName = "DomainName"
domainSecuritySettings = {
syncOnPremPasswords = "Enabled" }
ldapsSettings ={
ldaps = false
}
replicaSets = [
{
location = "West Eurpoe"
subnetId = "SubNetID"
}
]
sku = "Enterprise"
syncScope = "CloudOnly"
}
})
timeouts {
create = "60m"
delete = "60m"
}
}
```

### Environment

_No response_

Read specification/domainservices/resource-manager/Microsoft.AAD/stable/2021-05-01/domainservices.json and compare its 2022-12-01 request schema with the Terraform azapi reproduction. Check how syncOnPremPasswords is represented against the reported enabled/disabled behavior. Done means the specification accurately reflects the API contract for the supplied value.

Written by the indexing model from the issue text.