Merge pull request #25561 from Kumataro:fix25560

highgui: wayland: expand image width if title bar cannot be shown

Close #25560

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake

modules/highgui/test/test_gui.cpp

@@ -215,6 +215,21 @@ TEST(Highgui_GUI, trackbar)
     EXPECT_NO_THROW(destroyAllWindows());
 }
 
+// See https://github.com/opencv/opencv/issues/25560
+#if !defined(ENABLE_PLUGINS)
+TEST(Highgui_GUI, DISABLED_small_width_image)
+#else
+TEST(Highgui_GUI, small_width_image)
+#endif
+{
+    const std::string window_name("trackbar_test_window");
+    cv::Mat src(1,1,CV_8UC3,cv::Scalar(0));
+    EXPECT_NO_THROW(destroyAllWindows());
+    ASSERT_NO_THROW(namedWindow(window_name));
+    ASSERT_NO_THROW(imshow(window_name, src));
+    EXPECT_NO_THROW(waitKey(10));
+    EXPECT_NO_THROW(destroyAllWindows());
+}
 
 TEST(Highgui_GUI, currentUIFramework)
 {