fix(mobile): remove custom font loader causing SIGABRT crash on iOS release

apps/mobile/src/app/_layout.tsx

@@ -1,27 +1,11 @@
-import { useEffect } from "react";
 import { Stack } from "expo-router";
-import { useFonts } from "expo-font";
-import Ionicons from "@expo/vector-icons/Ionicons";
-import * as SplashScreen from "expo-splash-screen";
-
-SplashScreen.preventAutoHideAsync().catch(() => {});
+import { StatusBar } from "expo-status-bar";
 
 export default function RootLayout() {
-  const [loaded, error] = useFonts({
-    Ionicons: require("@expo/vector-icons/build/vendor/react-native-vector-icons/Fonts/Ionicons.ttf"),
-    ionicons: require("@expo/vector-icons/build/vendor/react-native-vector-icons/Fonts/Ionicons.ttf"),
-    ...(Ionicons.font || {}),
-  });
-
-  useEffect(() => {
-    if (loaded || error) {
-      SplashScreen.hideAsync().catch(() => {});
-    }
-  }, [loaded, error]);
-
-  if (!loaded && !error) {
-    return null;
-  }
-
-  return <Stack screenOptions={{ headerShown: false }} />;
+  return (
+    <>
+      <StatusBar style="dark" />
+      <Stack screenOptions={{ headerShown: false }} />
+    </>
+  );
 }