fix: make LoginWidget child of AccountsPage (#2234)

src/widgets/dialogs/LoginDialog.cpp

@@ -245,7 +245,8 @@ void AdvancedLoginWidget::refreshButtons()
     }
 }
 
-LoginWidget::LoginWidget()
+LoginWidget::LoginWidget(QWidget *parent)
+    : QDialog(parent)
 {
 #ifdef USEWINSDK
     ::SetWindowPos(HWND(this->winId()), HWND_TOPMOST, 0, 0, 0, 0,

src/widgets/dialogs/LoginDialog.hpp

@@ -64,7 +64,7 @@ public:
 class LoginWidget : public QDialog
 {
 public:
-    LoginWidget();
+    LoginWidget(QWidget *parent);
 
 private:
     struct {