Problem:

```
Given that you are on public project
When you disable a permission
  And enable it again
Then the dropdown shows that you selected the last value on the list
While the internal input has another value set.
```

This has to do with a quirky behavior where we replace the `value` and
the `options` provided to the `<select>` inside of the
ProjectFeatureSettings input component. Internally we used the
`selected` attribute of the `<option>` elements to track which option
was selected. That attribute is just for initial rendering though:

> If present, this Boolean attribute indicates that the option is
> initially selected. If the `<option>` element is the descendant of a
> `<select>` element whose multiple attribute is not set, only one
> single `<option>` of this `<select>` element may have the selected
> attribute.

This seems to be non-problematic if one never changes the options that
are availabe for the specific select.

The solution for this is to create a computed property with a getter and
setter and use that computed property as a v-model for the internal
select.

Changelog: fixed