Remove try/except around NWBZarrIO #993

Job	Run time
linux-gallery-python3.8-minimum	53s
linux-gallery-python3.12-upgraded	1m 4s
windows-gallery-python3.8-minimum	1m 44s
windows-gallery-python3.12-upgraded	1m 42s
linux-python3.8-minimum	1m 48s
linux-python3.12	2m 4s
linux-python3.12-upgraded	5m 25s
windows-python3.8-minimum	3m 19s
conda-linux-python3.8-minimum	2m 13s
windows-python3.12-upgraded	6m 57s
conda-linux-python3.12-upgraded	5m 31s
macos-python3.8-minimum	3m 20s
macos-python3.12-upgraded	3m 53s
Deploy pre-release from dev	0s
	39m 53s

Provide feedback