DICOM Tag Browser series selector has duplicate entries a single series

[fedorov]

https://andrey-slim-test.web.app/studies/2.25.251936354614427926637253139531267879404/series/1.3.6.1.4.1.5962.99.1.1884877265.1389580369.1719871828433.4.0

Maybe because ImageType is not the same across the instances? But it will not be the same in most cases. This is a bug!

[fedorov]

There's more to it than differences in ImageType - this one has differences within a series, but there are no duplicates in the selector.

https://andrey-slim-test.web.app/studies/2.25.147491078891690248552488589436202370211/series/1.3.6.1.4.1.5962.99.1.1510158924.763123020.1637892731468.2.0