Merge pull request #27421 from dkurt:dkurt-patch-1

Cover all seek directions in VideoCapture Java test #27421

### Pull Request Readiness Checklist

required for https://github.com/opencv/opencv/pull/27370

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.
- [x] The feature is well documented and sample code can be built with the project CMake

modules/videoio/misc/java/test/VideoCaptureTest.java

@@ -123,6 +123,10 @@ public class VideoCaptureTest extends OpenCVTestCase {
                 {
                     if (origin == 0)
                         f.seek(offset);
+                    else if (origin == 1)
+                        f.seek(f.getFilePointer() + offset);
+                    else if (origin == 2)
+                        f.seek(f.length() + offset);
                     return f.getFilePointer();
                 }
                 catch (IOException e)