Remove global menu support from Android

This pull out QtWidgets which we don't need

src/qml/GlobalMenu.qml

@@ -15,7 +15,7 @@ import org.kde.neochat.settings
 Labs.MenuBar {
     id: root
 
-    required property NeoChatConnection connection
+    property NeoChatConnection connection
 
     Labs.Menu {
         title: i18nc("menu", "NeoChat")

src/qml/Main.qml

@@ -64,8 +64,9 @@ Kirigami.ApplicationWindow {
 
     Loader {
         active: Kirigami.Settings.hasPlatformMenuBar && !Kirigami.Settings.isMobile
-        sourceComponent: GlobalMenu {
-            connection: root.connection
+        sourceComponent: Qt.createComponent("org.kde.neochat", "GlobalMenu")
+        onActiveChanged: if (active) {
+            item.connection = root.connection;
         }
     }