Hotfix for eviction issue

[tdene]

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[tdene]

I had not accounted for chunked prefill. I've now fixed that, and tested that the fix works.

[svcnvidia-nemo-ci]

🔄 Merge queue validation started!

You can track the progress here: https://github.com/NVIDIA/Megatron-LM/actions/runs/23238546285