[v2] namespaced resources don't have clean/tested examples

In the v2 compatible preview of provider-upjet-aws, we generate examples content for both cluster scoped and namespaced resources in the [examples-generated](https://github.com/crossplane-contrib/provider-upjet-aws/tree/crossplane-v2/examples) directory.

However, these generated examples have not been cleaned and tested with `uptest`, so there are 0 namespaced examples in the [examples](https://github.com/crossplane-contrib/provider-upjet-aws/tree/crossplane-v2/examples) directory. We even skip checking the namespaced resources for examples in the [check-examples.py](https://github.com/crossplane-contrib/provider-upjet-aws/blob/crossplane-v2/scripts/check-examples.py#L55) script - we should probably not do this long term.

I'm not entirely familiar with the process, but it's my understanding that this has historically been somewhat manual. That would be a large investment of time and energy to manually get these generated examples tested and committed.

Questions:

* Is there a better approach where we can take the tested examples of cluster scoped resources and transform them automatically into namespaced variants?
* Would the `xpkg batch` command need to be updated in order to process namespaced examples too?