Converting Long to int overflow

[jburel]

see https://www.openmicroscopy.org/qa2/qa/feedback/29795/ and https://forum.image.sc/t/z-projection-disabled-big-images/26125/9

serverStackTrace = ome.conditions.ApiUsageException: Converting Long 2159923200 to Integer is an overflow.
at ome.io.nio.RomioPixelBuffer.safeLongToInteger(RomioPixelBuffer.java:123)
at ome.io.nio.RomioPixelBuffer.getStack(RomioPixelBuffer.java:579)
at ome.services.projection.ProjectionBean.projectStack(ProjectionBean.java:123)