[v4-beta user feedback]

[kswang1029]

Describe the bug
This is a user feedback.

If we have two cube loaded in carta, the PV preview function works only on the first image. On the 2nd image, when we drag the pv cut, we don't see live update of the pv preview.

@crocka could you have a check please? (I am not sure which side causing the issue for now)

To Reproduce
Steps to reproduce the behavior:

1. load two cubes in carta (can have them matched or unmatched)
2. try pv preview on the first image (it should work expectedly)
3. try pv preview on the 2nd image

Expected behavior
pv preview should work when there are multiple image cubes loaded

Screenshots or videos
If applicable, add screenshots/videos to help explain your problem.

Platform info (please complete the following information):

• OS [e.g. macOS Monterey]: macOS ventura
• Browser [e.g. chrome, safari, electron app]: electron app
• Browser version [e.g. 22]:
• Backend branch [e.g. dev, v3b2 release]: v4-beta
• Frontend branch [e.g. dev, v3b2 release]: v4-beta