server bench: fix bench not waiting for model load #12147

Job	Run time
Push Docker image to Docker Hub (light, .devops/main.Dockerfile, linux/amd64,linux/arm64)	25m 21s
Push Docker image to Docker Hub (full, .devops/full.Dockerfile, linux/amd64,linux/arm64)	31m 45s
Push Docker image to Docker Hub (server, .devops/server.Dockerfile, linux/amd64,linux/arm64)	27m 35s
Push Docker image to Docker Hub (light-cuda, .devops/main-cuda.Dockerfile, linux/amd64)	24m 2s
Push Docker image to Docker Hub (full-cuda, .devops/full-cuda.Dockerfile, linux/amd64)	28m 49s
Push Docker image to Docker Hub (server-cuda, .devops/server-cuda.Dockerfile, linux/amd64)	25m 48s
Push Docker image to Docker Hub (light-rocm, .devops/main-rocm.Dockerfile, linux/amd64,linux/arm64)	21m 35s
Push Docker image to Docker Hub (full-rocm, .devops/full-rocm.Dockerfile, linux/amd64,linux/arm64)	11m 39s
Push Docker image to Docker Hub (server-rocm, .devops/server-rocm.Dockerfile, linux/amd64,linux/a...	12m 1s
Push Docker image to Docker Hub (light-intel, .devops/main-intel.Dockerfile, linux/amd64)	7m 39s
Push Docker image to Docker Hub (server-intel, .devops/server-intel.Dockerfile, linux/amd64)	8m 36s
	3h 44m 50s

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