Is your feature request related to a problem? Please describe.
In the read function of WSIReader, it has kwargs arg as other readers, but missed to apply it in the calling of 3rd APIs, so we can't set additional args of these APIs:
https://github.com/Project-MONAI/MONAI/blob/dev/monai/data/image_reader.py#L764

Would be nice to apply the kwargs for 3rd APIs.