Zeiss CZI: Initialisation failure due to 'Invalid C index'

[dgault]

Issue was raised via QA-32932 and a sample file was provided that reproduces the issue with Bio-Formats 6.13.0

When attempting to open the file it fails during initialisation and the following stack trace is seen:

Exception in thread "main" java.lang.IllegalArgumentException: Invalid C index: 1/1
	at loci.formats.FormatTools.getIndex(FormatTools.java:481)
	at loci.formats.FormatTools.getIndex(FormatTools.java:408)
	at loci.formats.FormatReader.getIndex(FormatReader.java:1150)
	at loci.formats.in.ZeissCZIReader.assignPlaneIndices(ZeissCZIReader.java:2181)
	at loci.formats.in.ZeissCZIReader.initFile(ZeissCZIReader.java:1002)
	at loci.formats.FormatReader.setId(FormatReader.java:1466)
	at loci.formats.ImageReader.setId(ImageReader.java:863)

[dominikl]

Another QA from UoD/Nightshade user: QA 42439