Module `outputs` property appears even if there are no outputs in the referenced module

**Bicep version**
v0.4.451

**Describe the bug**
The module `outputs` property appears in completions (and the underlying type) even if the referenced module has no outputs:

**To Reproduce**

empty.bicep:
_Empty file_

main.bicep:
```bicep
module empty 'empty.bicep' = {
name: 'hello'
}

output test string = empty.|
```

Request completions at `|` above.

Reproduce the issue with the empty.bicep and main.bicep examples, requesting completions at the cursor after empty. Check the completion result and underlying type for a module with no outputs; done when the outputs property is absent in both.

Written by the indexing model from the issue text.