[NPUW] Serialization fixes (#28442) #42410

Job	Run time
Smart_CI	12s
Docker	51s
Build / Build	6m 2s
Debian Packages	0s
PyTorch Models tests	0s
ONNX Runtime Integration / ONNX Runtime Integration	3m 48s
OpenVINO JS API / OpenVINO JS API	1m 34s
C++ unit tests / C++ unit tests	11m 58s
CPU functional tests / CPU functional tests	5m 23s
JAX Layer Tests / JAX Layer Tests	1m 21s
OpenVINO tokenizers extension / OpenVINO tokenizers extension	2m 17s
Python unit tests / Python unit tests	2m 54s
Samples / Samples	6m 11s
Python API tests / Python API tests	2m 38s
Pytorch Layer Tests / PyTorch Layer Tests	2m 42s
TensorFlow Models tests	0s
TensorFlow Layer Tests / TensorFlow Layer Tests	3m 49s
ci/gha_overall_status_linux_arm64	1s
	51m 41s

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