[Bugfix] precompile Triton KV-zero and slot-mapping kernels (#43009)

[zhougit86]

Purpose

Draft fix for Triton JIT happening in inference hot paths.

This change adds minimal warmup calls for:

• KV block zeroing
• slot mapping

The intent is only to trigger these Triton paths once during warmup through the existing wrapper paths, so their first compilation does not happen during inference.

Related issue:

• Closes [Bug]: Triton kernel JIT compilation during inference #43009

Test Plan

todo

Test Result

todo

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[Nightwing-77]

not sure if the bug fix for #43009 should be focused on adding another warmup rather can we debug why the existing warmup stage is being cut short

[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @zhougit86.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork