[CPU] Always select nspc layout for int8 Convolution#30872

EgorDuplensky wants to merge 2 commits intoopenvinotoolkit:releases/2025/2openvinotoolkit/openvino:releases/2025/2from

EgorDuplensky:backport_fix_int8_avx_convolutionEgorDuplensky/openvino:backport_fix_int8_avx_convolutionCopy head branch name to clipboard