UI: dock task panel right, remove non-Kindred themes

- Move ComboView default dock position from Left to Right
- Remove FreeCAD Classic, FreeCAD Light, FreeCAD Dark, and Dark behave
  theme packs, keeping only KindredCreate (Catppuccin Mocha)

src/Gui/MainWindow.cpp

@@ -782,7 +782,7 @@ bool MainWindow::updateComboView(bool show)
                                          ->GetGroup("DockWindows")
                                          ->GetGroup("ComboView");
         bool enable = group->GetBool("Enabled", true);
-        _updateDockWidget("Std_ComboView", enable, show, Qt::LeftDockWidgetArea, [](QWidget* widget) {
+        _updateDockWidget("Std_ComboView", enable, show, Qt::RightDockWidgetArea, [](QWidget* widget) {
             auto pcComboView = qobject_cast<ComboView*>(widget);
             if (widget) {
                 return widget;