fix: Generic support for Chakra UI

[nickgros]

• Partially fix Fix Typescript generics support in all themes in the beta #3072
• Extract ChakraIconButton to its own file to abstract away React.memo
• Refactor AltDateWidget to extract DateElement component

Checklist

• I'm updating documentation
  • I've checked the rendering of the Markdown text I've added
• I'm adding or updating code
  • I've added and/or updated tests. I've run npm run test:update to update snapshots, if needed.
  • I've updated docs if needed
  • I've updated the changelog with a description of the PR
• I'm adding a new feature
  • I've updated the playground with an example use of the feature

[nickgros]

This component was originally created within the AltDateWidget component, so I extracted it to prevent potential performance issues where the component may be excessively re-rendered.

[heath-freenome]

I wonder if we should do this for other themes?

[heath-freenome]

Also, update the main index.tsx (maybe rename to index.ts since it doesn't need to be a .tsx)

import Form from "./Form";

export { default as Form, generateForm } from "./Form";
export { default as Templates, generateTemplates } from "./Templates";
export { default as Theme, generateTheme } from "./Theme";
export { default as Widgets, generateWidgets } from "./Widgets";
export { __createChakraFrameProvider } from "./ChakraFrameProvider";

export type { ChakraUiSchema as UiSchema } from "./utils";

export default Form;