Utils: Add sorted() function

For simpler calling code.

Change-Id: Ia0a16a28770fd172f74d06a626148248bf5d3c0c
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/git/stashdialog.cpp

@@ -372,8 +372,7 @@ QList<int> StashDialog::selectedRows() const
         if (index.isValid())
             rc.push_back(index.row());
     }
-    Utils::sort(rc);
-    return rc;
+    return Utils::sorted(std::move(rc));
 }
 
 void StashDialog::forceRefresh()