Images UI doesn't load images correctly when clicking Search

[jescalada]

This is an issue that remains from https://github.com/G-Research/fasttrackml/issues/1238. The images are currently loading correctly when refreshing or accessing the URL directly, however they don't seem to load correctly whenever there is an update (such as with the Search button).

There are two separate problems:

• [x] Images don't load correctly unless refreshed
• [x] Selected sequence names are not fetching correctly (it seems all are being fetched at once) [Solved in backend]
• [x] Index range is not shown correctly/not fetching the right artifacts

[jescalada]

Moving this one back to the board as we're almost done with it!