Fix roi link permissions

[will-moore]

Fixes issue reported at https://forum.image.sc/t/rois-link-in-omero-table-not-working/119676/4 where we failed to use a "cross-group" query, so a link to ROI in iviewer didn't work if the ROI wasn't in your default group.

To test:

• As user-3 on merge-ci, login and then enter URL /web/iviewer/?roi=3819 (that ROI is owned by user-3 but not in their default group)
• Currently this fails with Error dialog in iviewer
• This should find the correct image and open it in iviewer

[pwalczysko]

I was able to repeat the bug on outreach server:

In default group, the link to a ROI works fine.
In non-default group, the link to a ROI fails with error dialog in iviewer

With this PR:

Works as expected. I am noting that the ROI is in a non-default group of user-3

Maybe for another PR:
I am seeing an uinexpected behaviour with another link connected to iviewer. On the very ROI https://merge-ci.openmicroscopy.org/web/iviewer/?roi=3819, select the Info tab in RHP, then click on Image ID (4003). Observe that the image does not get selected in webclient (the Dataset just beneath it does if clicked)