fix(client): use native language names in the settings dropdown too

Export the languageNames map and reuse it in the Settings page so EN/DE/TR turn into English/Deutsch/Türkçe alongside the auth-page selector.

client/src/Components/inputs/LanguageSelector.tsx

@@ -7,7 +7,7 @@ import { useDispatch } from "react-redux";
 import { setLanguage } from "@/Features/UI/uiSlice";
 import type { RootState } from "@/Types/state";
 
-const languageNames: Record<string, string> = {
+export const languageNames: Record<string, string> = {
 	en: "English",
 	de: "Deutsch",
 	es: "Español",

client/src/Pages/Settings/index.tsx

@@ -24,6 +24,7 @@ import type { SettingsFormData, SettingsFormInput } from "@/Validation/settings"
 import { useState } from "react";
 import { Controller } from "react-hook-form";
 import { TextField, Button, FieldLabel, SliderWithLabel } from "@/Components/inputs";
+import { languageNames } from "@/Components/inputs/LanguageSelector";
 import { Box, Typography } from "@mui/material";
 import { useDelete } from "@/Hooks/UseApi";
 
@@ -327,7 +328,7 @@ export const SettingsPage = () => {
 										key={lang}
 										value={lang}
 									>
-										{lang.toUpperCase()}
+										{languageNames[lang] ?? lang}
 									</MenuItem>
 								))}
 							</Select>