"Unsaved changes" popup showing up but changes are saved

[Arnei]

Fix an issue where a browser popup informing the user about unsaved changes would show up when trying to close the series details modal after editing acls, no matter if they actually saved their changes or not.

Fixes #382 (The missing translation string was already fixed elsewhere).

[github-actions]

This pull request is deployed at test.admin-interface.opencast.org/757/2024-07-01_08-27-08/ .
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-757

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-757

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 has conflicts ☹
Please resolve those so we can review the pull request.
Thanks.