Swagger SemanticValidation suppressions arent working

The swagger semantic validation check is reporting a [MULTIPLE_BODY_PARAMETERS error](https://github.com/Azure/azure-rest-api-specs/pull/32527/checks?check_run_id=47158084254) on this PR: https://github.com/Azure/azure-rest-api-specs/pull/32527

I've tried to suppress in the following ways, however neither method seems to work:
```yaml
suppressions:
- code: LroExtension
from: generated_blob.json
reason: Legacy operations not defined as lro
- code: MULTIPLE_BODY_PARAMETERS
from: generated_blob.json
reason: The form data definition is valid
```

```yaml
directive:
- suppress: XMS_EXAMPLE_NOTFOUND_ERROR
from: generated_blob.json
reason: Service uses XML, not JSON, so cannot validate.
- suppress: MULTIPLE_BODY_PARAMETERS
from: generated_blob.json
reason: These are multipart requests defined in typespec, the swagger is generated through typespec-autorest and the form data implementation is valid.
```

Please provide a solution since this PR is blocked on that check passing.