Fix multiple Global menu issues

See individual commits. When backporting, I'll create a separate patchset just for the we-broke-something-bugs without the strings.

src/app/qml/Main.qml

@@ -80,9 +80,8 @@ Kirigami.ApplicationWindow {
 
     Loader {
         active: Kirigami.Settings.hasPlatformMenuBar && !Kirigami.Settings.isMobile
-        sourceComponent: Qt.createComponent("org.kde.neochat", "GlobalMenu")
-        onActiveChanged: if (active) {
-            item.connection = root.connection;
+        sourceComponent: GlobalMenu {
+            connection: root.connection
         }
     }