Unexpected error when resolving object parameter

[This PR](https://github.com/Azure/azure-rest-api-specs-pr/pull/11802/files) is facing `ModelValidation` errors. One failure code in two methods:

As far as I can tell for both cases, the examples actually implement this _properly_. This tells me it's an oav failure.

- `INVALID_TYPE` -> Expected type object but found array
- We are improperly retrieving metadata, causing us to throw when we shouldn't.
- `INVALID_TYPE` -> Expected type object but found type string
- Indicates that we aren't mapping the target schema property. However, all of the examples failing this check, we have added the `type` property to the originating schema, and we _are_ providing a full object within the examples. There is a lookup failing for some reason.

In both cases, it is to do with the fact that we are not property mapping the schema type.