Refactor Steam callback cleanup on app exit

Simplified the cleanup logic for Steam callback pump by removing unnecessary try-catch and optional chaining. The cleanup is now directly registered after requiring Electron modules.

main.js

@@ -127,9 +127,10 @@ function initializeSteamworks() {
 // This is critical for Steam Input to recognize native controller support
 initializeSteamworks();
 
+const { app, BrowserWindow, ipcMain, session, screen, shell, dialog, Menu, clipboard, webContents } = require('electron');
+
 // Cleanup Steam callback pump on exit
-try {
-  app?.once?.('before-quit', () => {
+app.once('before-quit', () => {
   if (steamCallbacksInterval) {
     clearInterval(steamCallbacksInterval);
     steamCallbacksInterval = null;
@@ -138,9 +139,6 @@ try {
     steamInput?.shutdown?.();
   } catch {}
 });
-} catch {}
-
-const { app, BrowserWindow, ipcMain, session, screen, shell, dialog, Menu, clipboard, webContents } = require('electron');
 const { autoUpdater } = require('electron-updater');
 const { pathToFileURL } = require('url');
 const fs = require('fs');