[CPU][ARM] Fixed cvt_copy fast path for mha_single_token_kernel #16245

Job	Run time
Smart_CI	24s
Docker	49s
Build / Build	12m 19s
C++ unit tests / C++ unit tests	1m 16s
Debian Packages / Debian Packages	1m 54s
Python unit tests / Python unit tests	3m 55s
Samples / Samples	4m 51s
JAX Layer Tests / JAX Layer Tests	2m 15s
OpenVINO tokenizers extension / OpenVINO tokenizers extension	2m 48s
Python API tests / Python API tests	1m 54s
Pytorch Layer Tests / PyTorch Layer Tests	16m 3s
TensorFlow Layer Tests / TensorFlow Layer Tests	13m 59s
ci/gha_overall_status_ubuntu_24	1s
	1h 2m 28s

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