[Android] [weex 0.30.2] Unable to change input type from password to text

After upgrade from 0.28 it is impossible to change input field type back to `text` after changing from `text` to `password`: field remains `password`

```

export default {
name: 'PasswordField',
data () {
return {
visible: true,
val: 'Pazzword'
};
},
};

```

No source file or test is named. Reproduce the provided input-type toggle on Android with Weex 0.30.2, then trace the input component's type binding and compare behavior with 0.28. Done means changing from text to password and back displays the field as text again, with a regression test covering the toggle.

Written by the indexing model from the issue text.