Fix non-working PWA modal buttons

- Fixed 'Got it' and 'Later' buttons in iOS Safari modal
- Fixed 'Close' button in fallback instructions modal
- Fixed 'OK' button in final dismissal notification
- Replaced broken inline onclick with proper event listeners
- Added comprehensive button event handling with logging

Bug: Modal buttons were unresponsive due to inline onclick issues

index.html

@@ -3952,7 +3952,7 @@ if ('serviceWorker' in navigator) {
                         
                         if (isPWAInstalled) {
                             // Если это PWA, показываем уведомление об обновлении
-                            showUpdateNotification();
+                        showUpdateNotification();
                         } else {
                             // Если это браузер, показываем промпт установки
                             if (window.pwaInstallPrompt && !window.pwaInstallPrompt.isInstalled) {