Update schemas and resolve some warnings

reminder-dashboard/src/components/App/TimezoneProvider.tsx

@@ -1,15 +1,27 @@
 import { createContext } from "preact";
 import { useContext } from "preact/compat";
-import { useState } from "preact/hooks";
+import { useEffect, useState } from "preact/hooks";
 import { DateTime } from "luxon";
+import { fetchUserInfo } from "../../api";
+import { useQuery } from "react-query";
 
 type TTimezoneContext = [string, (tz: string) => void];
 
 const TimezoneContext = createContext(["UTC", () => {}] as TTimezoneContext);
 
 export const TimezoneProvider = ({ children }) => {
+    const { data } = useQuery({ ...fetchUserInfo() });
+
     const [timezone, setTimezone] = useState(DateTime.now().zoneName);
 
+    useEffect(() => {
+        setTimezone(
+            data === undefined || data.preferences.use_browser_timezone
+                ? DateTime.now().zoneName
+                : data.preferences.timezone,
+        );
+    }, [data]);
+
     return (
         <TimezoneContext.Provider value={[timezone, setTimezone]}>
             {children}