Fix crash in bin transform with empty input table #768

Job	Run time
build-vegafusion-jupyter-packages	15m 34s
build-vegafusion-packages	2m 59s
build-vegafusion-python-embed-linux-64	22m 51s
build-vegafusion-python-embed-linux-arm64	19m 31s
build-vegafusion-python-embed-osx-64	20m 46s
build-vegafusion-python-embed-osx-arm64	21m 9s
build-vegafusion-python-embed-win-64	32m 45s
build-vegafusion-server-linux-64	18m 31s
build-vegafusion-server-linux-arm64	18m 44s
build-vegafusion-server-osx-64	22m 52s
build-vegafusion-server-osx-arm64	29m 47s
build-vegafusion-server-win-64	30m 54s
build-vegafusion-wasm	12m 27s
check-rust	13m 38s
test-rust (ubuntu-20.04)	45m 53s
test-rust (windows-2022)	1h 4m 26s
test-rust (macos-11)	48m 54s
test-vegafusion-python-osx-64	10m 25s
test-vegafusion-python-linux-64	7m 19s
test-vegafusion-jupyter-linux-64	34m 23s
test-vegafusion-python-win-64	12m 55s
	8h 26m 43s

Provide feedback