Ignore responses of outdated table fetches

[Arnei]

Track the latest request ID per resource slice so a slower, older fetch can no longer overwrite newer table data.

How to test this

Use the devs tools to throttle network connection. Try setting a filter right after the regular polling has started. The table should not briefly flicker back to the old data.

AI Usage

Claude Sonnet 5 was used with this PR.

[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 

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 

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.

[github-actions]

This pull request is deployed at test.admin-interface.opencast.org/1678/2026-09-24_12-05-07/ .
It might take a few minutes for it to become available.