[CPU] FullyConnected: corrected BF16 config in case of f16 weights #17032

Job	Run time
Smart_CI	19s
Build / Build	44m 48s
Samples	10m 27s
Python unit tests	12m 3s
OpenVINO Python API Tests (3.9)	5m 6s
JS API	0s
OpenVINO Python API Tests (3.10)	4m 43s
OpenVINO Python API Tests (3.11)	4m 20s
OpenVINO Python API Tests (3.12)	5m 3s
CPU functional tests	43m 3s
OpenVINO tokenizers extension / OpenVINO tokenizers extension	8m 39s
Pytorch Layer Tests / PyTorch Layer Tests	26m 45s
C++ unit tests / C++ unit tests	1m 53s
JAX Layer Tests / JAX Layer Tests	7m 8s
TensorFlow Layer Tests / TensorFlow Layer Tests	32m 49s
ci/gha_overall_status_windows	1s
	3h 27m 7s

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