Migrate to Storybook 8.2.6 (#8835)
### Description
This upgrades the `design-system/apps/docs` example to latest stable
Storybook version following the [migration
guide](https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#framework-specific-vite-plugins-have-to-be-explicitly-added)
from Storybook.
### Testing Instructions
1. `cd examples/design-system`
2. `pnpm install`
3. `pnpm dev`
4. view Storybook instance
