fix(menu): crash on linux

- resolves #1477

src/i18n/resources/@types/index.ts

@@ -1,7 +1,7 @@
 export interface LanguageResources {
   [lang: string]: {
     translation: Record<string, unknown> & {
-      language: {
+      language?: {
         name: string;
         'local-name': string;
         code: string;

src/index.ts

@@ -404,7 +404,7 @@ async function createMainWindow() {
   removeContentSecurityPolicy();
 
   win.webContents.on('dom-ready', async () => {
-    if (useInlineMenu) {
+    if (useInlineMenu && !is.linux()) {
       win.setTitleBarOverlay({
         ...defaultTitleBarOverlayOptions,
         height: Math.floor(

src/menu.ts

@@ -377,7 +377,7 @@ export const mainMenuTemplate = async (
             availableLanguages
               .map(
                 (lang): Electron.MenuItemConstructorOptions => ({
-                  label: `${languageResources[lang].translation.language.name} (${languageResources[lang].translation.language['local-name']})`,
+                  label: `${languageResources[lang].translation.language?.name ?? 'Unknown'} (${languageResources[lang].translation.language?.['local-name'] ?? 'Unknown'})`,
                   type: 'checkbox',
                   checked: (config.get('options.language') ?? 'en') === lang,
                   click() {