* Convert `ErrorPlaceholder` and `ErrorMessage` to TypeScript
* Add stories for `ErrorPlaceholder` and `ErrorMessage` (https://github.com/woocommerce/woocommerce-blocks/pull/5255)
Stories include:
* Default generic error
* API error
* Unknown error
* Error without possibility to retry
* Base Error atom
Where applicable, the **Retry** button will not only trigger the appropriate
action, but also simulate the loading state of the error component.
* Update references to `ErrorMessage` component to leave the file extension out
Fixwoocommerce/woocommerce-blocks#5255
Refs woocommerce/woocommerce-blocks#5249
M. L. Giannotta