🐛 Input: make left/right-adornments reactive

[oddvernes]

Currently if an icon is added to a textfield dynamically such as adding an error icon when invalid, the input padding is not updated causing the icon to potentially overlap other content such as the calendar button when type="date".
One workaround is to force refrech the component using key

key={canSubmit.toString() + '1'}
inputIcon={canSubmit && <Icon data={error} />}

but we should make this work automatically as adding and removing warning icon is probably a common use case