Fix error color for floating label when an error is shown in the input. The spec has changed back and forth on this, but bring it up to the current value.
Fix error color for floating label when an error is shown in the input. The spec has changed back and forth on this, but bring it up to the current value.

PiperOrigin-RevId: 196204305

angulardart/angular_components,angulardart/angular_components,angulardart/angular_components