Remove filter selection if no value is selected

[eduardklinger]

When a filter was selected, but no value was chosen, the filter dropdown or datepicker was unexpectedly opening on a page reload.

This fixes this issue including #1079

[github-actions]

Hi @eduardklinger
Thank you for contributing to the Opencast Admin UI.
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@eduardklinger if you file any other PRs you're going to see other messages like this. Ping me or @lkiesow and we'll get to removing them.

[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-1132

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-1132

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/1132/2025-03-01_14-37-25/ .
It might take a few minutes for it to become available.

[Arnei]

This seems to somehow break the feature where we remember set filters across tab switches (see #980).

[github-actions]

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