[BUG] Security subAssessments.json 2019-01-01-preview misses assessedResourceType that exists in runtime

### API Spec link

https://github.com/Azure/azure-rest-api-specs/blob/main/specification/security/resource-manager/Microsoft.Security/preview/2019-01-01-preview/subAssessments.json

### API Spec version

2019-01-01-preview

### Describe the bug

Swagger only defines 3 types of "AdditionalData"
https://github.com/Azure/azure-rest-api-specs/blob/main/specification/security/resource-manager/Microsoft.Security/preview/2019-01-01-preview/subAssessments.json#L254-L258

But runtime has more, e.g. `AzureContainerRegistryVulnerability`.

See https://github.com/Azure/azure-sdk-for-java/issues/35478#issuecomment-1935248271

### Expected behavior

Swagger defines schema for all types of "AdditionalData"

### Actual behavior

Swagger misses these schemas.

### Reproduction Steps

Call `/providers/Microsoft.Security/subAssessments` API when your subscription has some "subAssessment"s.

My test is `"x-ms-client-request-id":"f76fbf6f-e6e6-403d-a9ee-20b2cefbe7b2"`

### Environment

_No response_

Start with specification/security/resource-manager/Microsoft.Security/preview/2019-01-01-preview/subAssessments.json, especially the AdditionalData definitions at lines 254-258, and compare them with responses from /providers/Microsoft.Security/subAssessments. Identify the runtime assessedResourceType values, including AzureContainerRegistryVulnerability, and update the specification so each has a schema.

Written by the indexing model from the issue text.