Fixed an issue with unnamed module imports

When generating the array of setters you have to make sure that an import is being imported to a local binding before adding it to the array.

```javascript
import "my-module";
```
The above should not produce a setter function or attempt to reference a setter function in the meta object returned by the phase1 function wrapper.
it seems to me that you're fixing the issue in the wrong place. This routine is to create a list of identifiers for each imported module, those identifiers are there, even if there is not local binding for the import.

what we need to guarantee, is to have, at least, an empty setter method for every imported module.