[OV] Add int4 config for Llama-3.1-8b model id aliases

[nikita-savelyevv]

What does this PR do?

https://huggingface.co/meta-llama/Meta-Llama-3.1-8B redirects to https://huggingface.co/meta-llama/Llama-3.1-8B . Thus these two model ids represent the same model. But the default int4 configs is set only for Meta-Llama-3.1-8B. That's why when export is run for Llama-3.1-8B, default int4 config is not applied.

In this PR this issue is fixed by adding a list of model id pairs that represent the same model.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

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