NPUW: Improve the robustness check for F16IC assignment (#34641) #26304

Job	Run time
Smart_CI	17s
Docker	44s
Build	12m 11s
NodeJS API tests (22, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64:pr-34631) / OpenVINO JS API	1m 3s
NodeJS API tests (20, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64:pr-34631) / OpenVINO JS API	1m 2s
Python API tests (3.10, openvinogithubactions.azurecr.io/ov_test/debian_10_py310:pr-34631) / Python API tests	3m 4s
Python API tests (3.11, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64:pr-34631) / Python API tests	3m 0s
Python API tests (3.13, openvinogithubactions.azurecr.io/ov_test/ubuntu_20_04_x64_py313:pr-34631) / Python API tests	2m 54s
Python API tests (3.12, openvinogithubactions.azurecr.io/ov_test/ubuntu_24_04_x64:pr-34631) / Python API tests	3m 1s
Python API tests (3.14t, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64_py314t:pr-34631) / Python API tests	1m 59s
Python API tests (3.14, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64_py314:pr-34631) / Python API tests	2m 19s
ci/gha_overall_status_manylinux_2_28	4s
	31m 38s

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