remove react-spring dependency

contexts/ThemeContext.tsx

@@ -76,6 +76,7 @@ export const ThemeProvider = ({ children }: PropsWithChildren) => {
   return (
     <ThemeContext.Provider value={providerValues}>
       <script
+        id="restore-theme"
         // unminified: https://gist.github.com/jakejarvis/79b0ec8506bc843023546d0d29861bf0
         dangerouslySetInnerHTML={{
           __html: `(()=>{try{const e=document.documentElement,t="undefined"!=typeof Storage?window.localStorage.getItem("theme"):null,a=(t&&"dark"===t)??window.matchMedia("(prefers-color-scheme: dark)").matches?"dark":"light";e.dataset.theme=a,e.style.colorScheme=a}catch(e){}})()`,