Move decode warmup from vLLM to metal side #114260

Job	Run time
check-sweeps-workflow	16s
check-black	3s
Run Pre-commit Hooks	1m 6s
check-interleaved-addr-gen-usage	1m 2s
check-metal-kernel-count	11s
codeowners-validator	16s
find-changed-files	1m 8s
check-symlinks-valid	12s
check-forbidden-imports	11s
check-doc	17s
check-spdx-licenses	47s
check-docs-links	0s
	5m 29s

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