[OV] Fix VLM in-place static quantization

[nikita-savelyevv]

What does this PR do?

Executing VLMs after static quantization but before serialization leads to original non-quantized models being inferred instead. For example in case of vision embeddings model within a VLM pipeline, the model is replaced at OVModelForVisualCausalLM level, but not at OVVisionEmbedding level.

This is a fast fix for VLMs only, full fix is here #1461

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?

[IlyasMoutawwakil]

LGTM ! Thanks !

[echarlaix]

Thanks for the fix !