GET Microsoft.Security/workspaceSettings/default is missing property workspaceId

# Bug Report

After [creating Security Center Workspace settings](https://docs.microsoft.com/en-us/rest/api/securitycenter/workspacesettings/create), the operation completes but when [getting the settings](https://docs.microsoft.com/en-us/rest/api/securitycenter/workspacesettings/get) subsequently, the `workspaceId` property is missing from the response.

## Create

```http
PUT /subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Security/workspaceSettings/default?api-version=2017-08-01-preview HTTP/1.1
Host: management.azure.com
User-Agent: Go/go1.16 (amd64-darwin) go-autorest/v14.2.1 Azure-SDK-For-Go/v53.4.0 Terraform Plugin SDK/1.17.1 terraform-provider-azurerm/acc
Content-Length: 273
Authorization: Bearer redacted
Content-Type: application/json; charset=utf-8
X-Ms-Correlation-Request-Id: af87d0b1-a4ed-9553-4c3b-7ea1b63d0b1a
Accept-Encoding: gzip

{
"properties": {
"workspaceId": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/acctestRG-sc-210426223947256945/providers/Microsoft.OperationalInsights/workspaces/acctest-210426223947256945-1",
"scope": "/subscriptions/00000000-0000-0000-0000-000000000000"
}
}
```
```http
HTTP/1.1 200 OK
Cache-Control: no-cache
Pragma: no-cache
Transfer-Encoding: chunked
Content-Type: application/json; charset=utf-8
Content-Encoding: gzip
Expires: -1
Vary: Accept-Encoding
x-ms-request-id: 66edc69b-b3f0-425e-83c4-703362642cbf
Server: Microsoft-HTTPAPI/2.0
x-ms-ratelimit-remaining-subscription-resource-requests: 249
x-ms-correlation-request-id: af87d0b1-a4ed-9553-4c3b-7ea1b63d0b1a
x-ms-routing-request-id: UKSOUTH:20210426T214123Z:2fbd133f-aef8-4b32-b337-b21b1f3e7058
Strict-Transport-Security: max-age=31536000; includeSubDomains
X-Content-Type-Options: nosniff
Date: Mon, 26 Apr 2021 21:41:23 GMT

{
"id": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Security/workspaceSettings/default",
"name": "default",
"type": "Microsoft.Security/workspaceSettings",
"properties": {
"workspaceId": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/acctestRG-sc-210426223947253749/providers/Microsoft.OperationalInsights/workspaces/acctest-210426223947253749-1",
"scope": "/subscriptions/00000000-0000-0000-0000-000000000000"
}
}
```

## Get

```http
GET /subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Security/workspaceSettings/default?api-version=2017-08-01-preview HTTP/1.1
Host: management.azure.com
User-Agent: Go/go1.16 (amd64-darwin) go-autorest/v14.2.1 Azure-SDK-For-Go/v53.4.0 Terraform Plugin SDK/1.17.1 terraform-provider-azurerm/acc
Authorization: Bearer redacted
X-Ms-Correlation-Request-Id: af87d0b1-a4ed-9553-4c3b-7ea1b63d0b1a
Accept-Encoding: gzip
```
```http
HTTP/1.1 200 OK
Cache-Control: no-cache
Pragma: no-cache
Transfer-Encoding: chunked
Content-Type: application/json; charset=utf-8
Content-Encoding: gzip
Expires: -1
Vary: Accept-Encoding
x-ms-request-id: 5af22b18-93eb-4b59-aa01-6bcf54d10b0b
Server: Microsoft-HTTPAPI/2.0
x-ms-ratelimit-remaining-subscription-resource-requests: 731
x-ms-correlation-request-id: af87d0b1-a4ed-9553-4c3b-7ea1b63d0b1a
x-ms-routing-request-id: UKSOUTH:20210426T220109Z:0d8a3e96-7d56-4bdd-a2a3-9b1fbcd1fcf2
Strict-Transport-Security: max-age=31536000; includeSubDomains
X-Content-Type-Options: nosniff
Date: Mon, 26 Apr 2021 22:01:08 GMT

{
"id": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Security/workspaceSettings/default",
"name": "default",
"type": "Microsoft.Security/workspaceSettings",
"properties": {
"scope": "/subscriptions/00000000-0000-0000-0000-000000000000"
}
}```

Inspect the Microsoft.Security workspaceSettings API specification and compare the documented PUT and GET behavior shown in the report. Reproduce the create-then-get sequence if possible; the issue is done when the GET response preserves the properties.workspaceId value returned after creation.

Written by the indexing model from the issue text.