fix: correct spelling mistakes in code and error messages

[rinilkunhiraman]

Summary

Fix a consistent spelling error in SuspenseList component error messages. The word 'explicitly' was misspelled as 'explictly' in error messages that warn developers about future-compatibility requirements for SuspenseList props.

Problem: User-facing error messages contained the typo "explictly" instead of "explicitly", which affects the professionalism and clarity of React's developer experience.

Solution:

• Fixed typo in ReactFiberBeginWork.js error messages (2 locations)
• Updated corresponding test expectations in ReactSuspenseList-test.js (2 locations)

This ensures consistency between runtime error messages and their test expectations.

How did you test this change?

Verification steps taken:

1. Code Review: Manually verified all 4 instances of the typo were corrected

   • Lines 3174 and 3241 in ReactFiberBeginWork.js
   • Lines 259 and 1717 in ReactSuspenseList-test.js

2. File Validation: Confirmed only the intended files were modified:

   git diff --name-only HEAD~1
   # Output: packages/react-reconciler/src/ReactFiberBeginWork.js
   #         packages/react-reconciler/src/__tests__/ReactSuspenseList-test.js

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[rinilkunhiraman]

CLA signed

[SaurabhCodesAI]

Looks good to me spelling fixes only, CI is passing, CLA signed, no conflicts. Safe to merge

[rinilkunhiraman]

LGTM — spelling-only changes. CLA check passed, imports/internal checks passed. Vercel is green; Codesandbox is still pending after updating the branch. No conflicts. Safe to merge (squash) once checks are green.