fix(createReducer): return action from Dispatch to match Redux types

[mmustafasenoglu]

Summary

The Dispatch type in createReducer was returning void, which caused TypeScript errors when using the hook with redux-thunk or other middleware that expect dispatch to return the action.

Fixes #856

Changes

Changed Dispatch<Action> return type from void to Action to align with Redux's Dispatch typing.

- type Dispatch<Action> = (action: Action) => void;
+ type Dispatch<Action> = (action: Action) => Action;

Testing

Verified that the type change matches Redux's dispatch signature and resolves the TypeScript compilation errors reported in the issue.