refactor(react): sso-provider-create hook service separation

[harishsundar-okta]

Summary

Refactors the useSsoProviderCreate hook to follow the two-layer hook architecture (service + public hook).

Why

The SSO provider create hooks did not follow the established hook architecture pattern where a single public hook consumes an internal service hook. Previously, the logic was split across use-sso-provider-create (service/API) and use-sso-provider-create-logic (UI state), which is the inverse of the agreed-upon convention.

What

• Moved API/mutation logic from use-sso-provider-create to shared/services/use-sso-provider-create-service.ts as an internal service hook
• Merged use-sso-provider-create-logic into use-sso-provider-create as the single public hook that consumes the service internally
• Updated sso-provider-create component to use the unified public hook
• Moved service tests to shared/tests/use-sso-provider-create-service.test.ts
• Deleted use-sso-provider-create-logic.ts

Packages

• packages/core
• packages/react
• examples

References

Testing

How can this be verified? Note anything intentionally not covered by tests and why.

• This change adds unit test coverage
• Tested for both SPA and RWA flows, all example apps working
• All existing and new tests complete without errors

Checklist

• Breaking change
• Requires docs update
• Backward compatible

Contributing

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct

[codecov-commenter]

Codecov Report

❌ Patch coverage is 98.79518% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.47%. Comparing base (aecf241) to head (250db63).

Files with missing lines	Patch %	Lines
...shared/services/use-sso-provider-create-service.ts	98.05%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main     #314    +/-   ##
========================================
  Coverage   89.47%   89.47%            
========================================
  Files         156      156            
  Lines       13070    13074     +4     
  Branches     1419     1805   +386     
========================================
+ Hits        11694    11698     +4     
  Misses       1376     1376            

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