Respect the omero channels `active` flag and don't render it when false

[lanesawyer]

Describe the bug
There is an active flag in the omero channels metadata that indicates whether it should be shown by default. We currently assume all channels will be shown, and that assumption no longer holds true for all datasets that we are interested in showing.

To Reproduce
Steps to reproduce the behavior:

1. Render https://d3hik2dwvr9wk1.cloudfront.net/A549/organelle_box_crop_v1.zarr/ACTB/MeOH/003002 (depends on bugs OME-Zarr Example viewer crashes if axis name is upper case #134 and OME-Zarr viewer doesn't work with hex code colors that don't start with # #135 being fixed to see)
2. See that it doesn't match the rendering of the OME-Zarr viewer found here: https://organelle-box-portal-git-main-czbiohub.vercel.app/gene/2025_03_31_A549_ACTB?condition=MeOH
3. Turn on the Phase3D channel in the app linked above
4. See that it now looks like our Example app's default display

Expected behavior
Expected to not render channels that the metadata disables by default

Screenshots
Looks like this:

Should look like this:

Additional context
We'll want to add ways to toggle those channels on and off in a future update as well, but we should at least start with respecting the defaults