this.env.error is not a function when adding extensions with `aio app add extension`

```
aio --version
@adobe/aio-cli/10.3.4 darwin-arm64 node-v18.20.5
```

1. Run `aio app add extension`
2. Select any template
3. I receive this error. Everything else seems to work properly...Am I skipping a step here or something or is this a real issue?
```
✔ Installed npm package @adobe/generator-add-action-target
ℹ Running template @adobe/generator-add-action-target
› Error: this.env.error is not a function
```

Reproduce the failure with aio app add extension using the reported aio-cli version and any template, then inspect how the @adobe/generator-add-action-target template is run. Trace the source of the this.env.error call and verify that adding an extension completes without this error.

Written by the indexing model from the issue text.