feat: Retriever Model Support for Hybrid architecture Backbones

[vinay-raman]

What does this PR do ?

Retriever model support for hybrid model architectures (Nemotron Nano-9b-v2)

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[akoumpa]

Hi @vinay-raman thanks a lot for the PR, i see that main moved and there's a few conflicts now, would it be possible to resolve this so that we can then run CI? thanks.