cli: fix empty block uploading in `util upload-bin` #3711

Job	Run time
Build CLI (ubuntu-22.04, linux, amd64)	43s
Build CLI (ubuntu-22.04, linux, arm64)	21s
Build CLI (windows-2022, windows, amd64)	2m 37s
Build CLI (macos-12, darwin, amd64)	1m 11s
Build CLI (macos-12, darwin, arm64)	46s
Build and push docker image (Windows Server Core)	15m 1s
Build and push docker image	7m 55s
	28m 34s

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