Testing: fetch servers by region

frontend_reactjs/src/main.tsx

@@ -1,4 +1,4 @@
-import "@fontsource/open-sans";
+import "@fontsource/inter";
 import React from 'react'
 import ReactDOM from 'react-dom/client'
 import App from './App.tsx'
@@ -7,12 +7,13 @@ import { registerSW } from 'virtual:pwa-register'
 import { ThemeProvider } from '@emotion/react'
 import { createTheme } from '@mui/material'
 import { ruRU } from '@mui/material/locale'
+import { usePrefStore } from "./store/preferences.ts";
 
 const theme = createTheme(
   {
     typography: {
       fontFamily: [
-        'Open Sans'
+        'Inter'
       ].join(',')
     },
     components: {