Swagger Model Validation PR check gives false positive errors

In [PR 9407](https://github.com/Azure/azure-rest-api-specs-pr/pull/9407) the [Swagger Model Validation PR check](https://github.com/Azure/azure-rest-api-specs-pr/pull/9407/checks?check_run_id=9103809911) reports a number of INVALID_TYPE errors like this:

The [documentation for INVALID_TYPE](https://github.com/Azure/azure-rest-api-specs/blob/master/documentation/Semantic-and-Model-Violations-Reference.md#INVALID_TYPE) shows the format of the error message as
> Output Message: Expected type {0} but found type {1}.

Note the expected type `{0}` is not shown in the error messages above. I checked a few of these and in all cases the type was clearly defined as `type: object` (with no properties). So the messages are false positives -- the type is defined to be an object and that is what is specified in the example.