ForwardRef support for PasswordField, FieldGroup, & FieldGroupIconButton

[reesscot]

Description of changes:
This PR adds forward ref support for the PasswordField, FieldGroup, & FieldGroupIconButton primitives by wrapping them in React.forwardRef.

const CustomerComponent = () => {
  const ref = React.useRef(null);
  
  // Below returns INPUT because the ref is forwarded down to DOM element (PasswordField => TextField => Input => <input>)
  // ref.current.nodeName
  
  return (
    <PasswordField label="name" ref={ref} />
  );
};

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[changeset-bot]

🦋 Changeset detected

Latest commit: 727724b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@aws-amplify/ui-react	Patch

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