* fix: reapply chat font size on load
* refactor: streamline font size handling in localStorage
* fix: update matchMedia mock to accurately reflect desktop and touchscreen capabilities
* refactor: implement Jotai for font size management and initialize on app load
- Replaced Recoil with Jotai for font size state management across components.
- Added a new `fontSize` atom to handle font size changes and persist them in localStorage.
- Implemented `initializeFontSize` function to apply saved font size on app load.
- Updated relevant components to utilize the new font size atom.
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Co-authored-by: ddooochii <ddooochii@gmail.com>
Co-authored-by: Danny Avila <danny@librechat.ai>
