fix(core,react): fix ci cd build order

[NaveenChand755]

Summary

Removed the standalone type-check CI step because it ran before build, causing TypeScript to resolve against the published npm version of core instead of local source. Type-checking still runs inside each package's build script via turbo, in the correct dependency order.

Why

1. type-check ran before build in CI, so core's dist/ didn't exist yet
2. TypeScript fell back to the published npm version of core, missing local type errors

What

1. Removed the standalone type-check CI step
2. Type-checking still happens inside each package's build script, in the correct dependency order

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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.75%. Comparing base (efd9ddf) to head (e5c6f4e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #328   +/-   ##
=======================================
  Coverage   89.75%   89.75%           
=======================================
  Files         162      162           
  Lines       13542    13542           
  Branches     1798     1798           
=======================================
  Hits        12155    12155           
  Misses       1387     1387           

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