fix: restore Auth0ComponentProvider in component preview bundle

In @auth0/universal-components-react v2.0.1 the package entries were
split: the main entry exports *View components and useCoreClient, while
the /spa entry exports only Auth0ComponentProvider. A previous commit
(ad01b4f) switched mintlifyLoader from /spa to the main entry to recover
the missing View components, but that removed Auth0ComponentProvider from
the loaded module. getWrapper() destructures Auth0ComponentProvider from
that module, so it silently became undefined and all My Org component
previews stopped rendering.

Fix: mintlifyLoader now imports from both entries in parallel and merges
the results, so the wrapper has Auth0ComponentProvider, useCoreClient,
and all *View components available. Rebuilt the UMD bundle.

Author: SurajThotakura