perf(laguna): byte-exact MoE add_rms_norm fold on NVFP4 decode (VT_LA… #1381

Job	Run time
commit-protocol-tag	10s
device-leakage	13s
documentation-checkpoint	11s
cuda-arch-features	9s
agent-record	25s
build-test-cpu	11m 5s
sanitize-cpu (address,undefined)	10m 58s
sanitize-cpu (thread)	11m 4s
	34m 15s

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