Merge pull request #24451 from eplankin:3.4
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge pull request #24344 from asmorkalov:as/einsum_fallback_fix
js: include LUT support
cmake: revise OPENCV_DNN_BACKEND_DEFAULT integration
Merge pull request #24251 from dkurt:ov_build_debug
Merge pull request #24189 from dkurt:skip_ov_max_pool_ov
Merge pull request #24143 from seanm:sprintf4