fix: UserInfoPopup now requires a split as its parent (#5034)

Co-authored-by: Nerixyz <nerixdev@outlook.de>

src/controllers/commands/builtin/Misc.cpp

@@ -616,10 +616,8 @@ QString openUsercard(const CommandContext &ctx)
                "should be open.");
     }
 
-    auto *userPopup = new UserInfoPopup(
-        getSettings()->autoCloseUserPopup,
-        static_cast<QWidget *>(&(getApp()->windows->getMainWindow())),
-        currentSplit);
+    auto *userPopup =
+        new UserInfoPopup(getSettings()->autoCloseUserPopup, currentSplit);
     userPopup->setData(userName, channel);
     userPopup->moveTo(QCursor::pos(), widgets::BoundsChecking::CursorPosition);
     userPopup->show();