Merge pull request #29466 from Akansha-977:templatematch_IPP_5.x

Extracting IPP to HAL for matchTemplate function in 5.x #29466

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

hal/ipp/src/matchtemplate_ipp.cpp

@@ -132,8 +132,9 @@ int ipp_hal_matchTemplate(const uchar* src_data, size_t src_step, int src_width,
     else if(method == cv::TM_SQDIFF_NORMED || method == cv::TM_CCORR ||
             method == cv::TM_CCOEFF || method == cv::TM_CCOEFF_NORMED)
     {
-        // Raw cross-correlation; caller finishes SQDIFF_NORMED/CCOEFF/CCOEFF_NORMED via
-        // common_matchTemplate (TM_CCORR is already final).
+        // Raw cross-correlation only. TM_CCORR is already the final result; the caller
+        // (cv::matchTemplate) runs common_matchTemplate() to finish TM_SQDIFF_NORMED /
+        // TM_CCOEFF / TM_CCOEFF_NORMED.
         if(ipp_crossCorr(img, templ, result, false))
             return CV_HAL_ERROR_OK;
     }