intorduce `useOnClickReact` hook. `useOnClickReact` is the web implmentation of the similar function `onPressReact` introduced in D5780. This function handles the calling of the create reaction message endpoint and then dispatching the results of that to the reducer
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Linear Task: [[ https://linear.app/comm/issue/ENG-2473/add-react-button-to-web-message-tooltip | ENG-2473 ]]
Depends on D6054