feat(clerk-js): route OAuth callbacks to the enterprise connection chooser (#9947)

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

Author: NicolasLopes7

.changeset/oauth-callback-enterprise-chooser.md

@@ -0,0 +1,7 @@
+---
+'@clerk/clerk-js': patch
+'@clerk/shared': patch
+'@clerk/ui': patch
+---
+
+Add an `enterpriseConnectionsUrl` option to `handleRedirectCallback()` and `<AuthenticateWithRedirectCallback />`. When the Clerk API asks an OAuth sign-up to choose between several enterprise connections for the same email domain, the callback navigates to this URL, which defaults to the `enterprise-connections` route of your sign-up page.