Enable PNG exif orientation test

Skip KleidiCV in offline build

…kport

Backport some of C API removal in core module implementation.

flann: remove unused hdf5 header

dnn: use dispatching for Winograd optimizations

The new C++ code is copy/pasted from OpenCV5:
- functions initIntrinsicParams2D, subMatrix (the first 160 lines)
- function prepareDistCoeffs
- the different asserts

Not all the API/code is ported to C++ yet to ease the review.

It is introduced in 2.0.1 (not even in 2.0.0) and some old system like CentOS 7 still has 1.7 in stock.
- AcademySoftwareFoundation/openexr@60cdff8#diff-c4bae0726aebe410e407db9abd406d9cf2684f82dd8a08f46d84e8b7c35cf22aR67

Check existence of OpenEXR version macros before using.

…border

warpPerspective test: borderType argument fixed

Remove internal calib3d_c_api.h

HAL added for absdiff(array, scalar) + related fixes opencv#26459

### This PR changes
* HAL for `absdiff` when one of arguments is a scalar, including multichannel arrays and scalars
* several channels support for HAL `addScalar`
* proper data type check for `addScalar` when one of arguments is a scalar

### 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
- [ ] There is a reference to the original bug report and related work
- [ ] 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