Ladybird: Don't change window icons when background tabs change icons

Author: https://github.com/gunnarbeutner
Commit: acd70f44c2
Pull-request: https://github.com/SerenityOS/serenity/pull/16583
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/awesomekling ✅
Reviewed-by: https://github.com/linusg

Ladybird/BrowserWindow.cpp

@@ -346,7 +346,8 @@ void BrowserWindow::tab_title_changed(int index, QString const& title)
 void BrowserWindow::tab_favicon_changed(int index, QIcon icon)
 {
     m_tabs_container->setTabIcon(index, icon);
-    setWindowIcon(icon);
+    if (m_tabs_container->currentIndex() == index)
+        setWindowIcon(icon);
 }
 
 void BrowserWindow::open_next_tab()