A resource using {{ source "sourceid" }} fails if the sourceid is skipped

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Current Behavior

A resource using {{ source "sourceid" }} fails if the sourceid was skipped

### Expected Behavior

_No response_

### Steps To Reproduce

_No response_

### Environment

```markdown
- OS: linux
- updatecli: v0.114.0
```

### Pipeline Graph

```mermaid
```


### Anything else?

_No response_