TestConfigurationPullFromPrivateRegistry is failing

### What happened?

On https://github.com/crossplane/crossplane/pull/7755, we noticed that the e2e test `TestConfigurationPullFromPrivateRegistry` is failing consistently with:

```
DENIED: Permission 'artifactregistry.repositories.downloadArtifacts' denied on resource
'//artifactregistry.googleapis.com/projects/crossplane-playground/locations/us-west1/repositories/xp-install-test'
(or it may not exist).
```

Example failure in https://github.com/crossplane/crossplane/actions/runs/32150003551/job/95753219697?pr=7755

It looks like this test container repository `xp-install-test` in GCP that we use during the e2e tests for validating package pulls from a private repo has been accidentally deleted.

We need to figure out how to restore it or how to migrate it to a more permanent location.

### How can we reproduce it?

Run any of the `pkg` area e2e tests and `TestConfigurationPullFromPrivateRegistry` will fail.

### What environment did it happen in?

This is happening across all currently supported crossplane branches (1.20 -> 2.4 and main)

Start with the pkg area e2e tests and the failing TestConfigurationPullFromPrivateRegistry, then review the example GitHub Actions failure from pull request #7755. Confirm whether the xp-install-test Artifact Registry repository was deleted and determine whether it can be restored or must move to a permanent location. Done means the test can pull from the private registry successfully across the supported branches.

Written by the indexing model from the issue text.