Search filter does not work for value equal to null

[BaoKhanhFontAriel]

Issue submitter TODO list

• I've looked up my issue in FAQ
• I've searched for an already existing issues here
• I've tried running master-labeled docker image and the issue still persists there
• I'm running a supported version of the application which is listed here

Describe the bug (actual behavior)

I add filter record.value.name == null to search all values that have name equal to null but it shows no message found

Expected behavior

There should be 1 message found with name == null

Your installation details

Version is kafbat-ui-v1.0.0.jar, I run it with jar file

Steps to reproduce

1. Produce 2 message {"name":"Sam", "age": 25} and {"name": null, "age": 24}
2. Add filter record.value.name == null
3. Result shows no message found

Screenshots

Logs

No response

Additional context

No response

[github-actions]

Hello there BaoKhanhFontAriel! 👋

Thank you and congratulations 🎉 for opening your very first issue in this project! 💖

In case you want to claim this issue, please comment down below! We will try to get back to you as soon as we can. 👀