[Core] Migrate core.register_plugin internal impl to fs:::path #25437

Job	Run time
Smart_CI	15s
Docker	54s
Build	12m 15s
Python API tests (3.13, openvinogithubactions.azurecr.io/ov_test/ubuntu_20_04_x64_py313:pr-34333) / Python API tests	3m 49s
NodeJS API tests (22, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64:pr-34333) / OpenVINO JS API	1m 4s
NodeJS API tests (20, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64:pr-34333) / OpenVINO JS API	1m 4s
Python API tests (3.14, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64_py314:pr-34333) / Python API tests	2m 44s
Python API tests (3.14t, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64_py314t:pr-34333) / Python API tests	2m 17s
Python API tests (3.11, openvinogithubactions.azurecr.io/ov_test/ubuntu_22_04_x64:pr-34333) / Python API tests	3m 23s
Python API tests (3.10, openvinogithubactions.azurecr.io/ov_test/debian_10_py310:pr-34333) / Python API tests	3m 38s
Python API tests (3.12, openvinogithubactions.azurecr.io/ov_test/ubuntu_24_04_x64:pr-34333) / Python API tests	3m 47s
ci/gha_overall_status_manylinux_2_28	3s
	35m 13s

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