next.js

6b0559f0 - [CI] Fix GitHub Actions matrix configuration for React versions (#83677)

[CI] Fix GitHub Actions matrix configuration for React versions (#83677) The `build-and-test` workflow runs on `canary` are currently annotated with the following error ([x-ref](https://github.com/vercel/next.js/actions/runs/17629372493)): ``` Error when evaluating 'strategy' for job 'test-rspack-production'. .github/workflows/build_and_test.yml (Line: 412, Col: 13): Matrix exclude key 'react' does not match any key within the matrix ``` This addresses the issue for `test-rspack-production`, and also fixes inconsistencies in other jobs regarding the handling of this matrix dimension.