convert.py: When --vocab-only is passed, generate false but valid params #11662

Job	Run time
Push Docker image to Docker Hub (light, .devops/main.Dockerfile, linux/amd64,linux/arm64)	26m 18s
Push Docker image to Docker Hub (full, .devops/full.Dockerfile, linux/amd64,linux/arm64)	31m 9s
Push Docker image to Docker Hub (server, .devops/server.Dockerfile, linux/amd64,linux/arm64)	25m 59s
Push Docker image to Docker Hub (light-cuda, .devops/main-cuda.Dockerfile, linux/amd64)	18m 28s
Push Docker image to Docker Hub (full-cuda, .devops/full-cuda.Dockerfile, linux/amd64)	20m 17s
Push Docker image to Docker Hub (server-cuda, .devops/server-cuda.Dockerfile, linux/amd64)	19m 20s
Push Docker image to Docker Hub (light-rocm, .devops/main-rocm.Dockerfile, linux/amd64,linux/arm64)	12m 0s
Push Docker image to Docker Hub (full-rocm, .devops/full-rocm.Dockerfile, linux/amd64,linux/arm64)	11m 49s
Push Docker image to Docker Hub (server-rocm, .devops/server-rocm.Dockerfile, linux/amd64,linux/a...	10m 56s
Push Docker image to Docker Hub (light-intel, .devops/main-intel.Dockerfile, linux/amd64)	7m 59s
Push Docker image to Docker Hub (server-intel, .devops/server-intel.Dockerfile, linux/amd64)	8m 3s
	3h 12m 18s

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