Fix new filters not being loaded

[Arnei]

Fixes #693.

When a new table filter was added to Opencast, it would not show up in the filters dropdown unless the page cache was cleared. This should fix that.

I legit do not understand why the code was the way it was before this commit. If a reviewer could enlighten me why the previous code makes sense that would be great, but personally I see no harm in fetching the respective table filters everytime we load a new table.

[github-actions]

This pull request is deployed at test.admin-interface.opencast.org/914/2024-09-13_07-58-38/ .
It might take a few minutes for it to become available.

[github-actions]

Use docker or podman to test this pull request locally.

Run test server using develop.opencast.org as backend:

podman run --rm -it -p 127.0.0.1:3000:3000 ghcr.io/opencast/opencast-admin-interface:pr-914

Specify a different backend like stable.opencast.org:

podman run --rm -it -p 127.0.0.1:3000:3000 -e PROXY_TARGET=https://stable.opencast.org ghcr.io/opencast/opencast-admin-interface:pr-914

It may take a few seconds for the interface to spin up.
It will then be available at http://127.0.0.1:3000.
For more options you can pass on to the proxy, take a look at the README.md.

[lkiesow]

Can you give me a short description on how to best test this?

[Arnei]

Right. At the time I used this PR to test this. It is now merged, so you would have to recreate it.

There are probably easier ways to test this, for example by modifying the result of the request in tableFilters/fetchFilters in tableFilterSlice.ts. I can provide more detailled code changes if you would like.