In practice, processors offering AVX2/AVX512 also FMA, that is why it got unnoticed.

Fixed issue #20880, QRDetect::searchHorizontalLines() boundary condition will skip the matched qrcode near the end

dnn(protobuf): replace deprecated calls

* dnn: replace deprecated ByteSize() => ByteSizeLong()

* dnn: replace deprecated calls, use GetRepeatedFieldRef

- return type is C++ template
- removal from 'extern "C"' scope broke ABI anyway, so this symbols is removed completelly

imgproc: remove asserts for circles_ in HoughCircles

* fix: correctly check neon flags for QNX platform

* refactor: change __QNXNTO__ to __QNX__

* backport elementwise_layers refactor

* keep NULL