fix(refManualReset): add explicit return type annotation - #5246

Added explicit return type ManualResetRefReturn<T> to fix TypeScript declaration generation issues.

Closes #5232

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Description

Added explicit return type ManualResetRefReturn<T> to refManualReset function.

The function was missing an explicit return type annotation, which caused TypeScript declaration files (.d.ts) to not properly export the type information. This made refManualReset unusable when imported as an npm package.

Fixes #5232

Additional context

Simple one-line fix. The interface ManualResetRefReturn<T> was already defined but not used in the function signature.