FormulateInput - calling `error` in `uploader` method cause parent function promise to get rejected

[kristofferkjelde]

Describe the bug
If calling error in custom :uploader method in a try/catch, will cause the parent function promise to get rejected.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://codepen.io/kristofferkjelde/pen/zYRyMLa
2. upload a fil, .png
3. See stacktrace/error in console

Expected behavior
I don't expect the error property in the :uploader method to have unhandle promise.

Screenshots

Device information:

• Device: [e.g. iPhone6, 1997 Dell]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]