Add h-cls label info normalization

[sovrasov]

Summary

Since OV doesn't allow serialization of lists of strings with spaces in rt_info, we need to serialize it on export.
Previously, only label names were normalized, now we're normalizing also h_cls info to avoid errors in MAPI wrapper.

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have ran e2e tests and there is no issues.
• I have added the description of my changes into CHANGELOG in my target branch (e.g., CHANGELOG in develop).​
• I have updated the documentation in my target branch accordingly (e.g., documentation in develop).
• I have linked related issues.

License

• I submit my code changes under the same Apache License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below).

# Copyright (C) 2025 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[sovrasov]

Ready for review, validated in Geti

[atwinand]

LGTM.