Larger input height for Headers when producing message

[broccolism]

Issue submitter TODO list

• I've searched for an already existing issues here
• I'm running a supported version of the application which is listed here and the feature is not present there

Is your proposal related to a problem?

No response

Describe the feature you're interested in

Hi, I'm using Kafka UI and do test by producing messages to topic.
I think we should give more space to 'Headers' section since I can only see one line now.

Describe alternatives you've considered

No response

Version you're running

0.7.2

Additional context

No response

[github-actions]

Hello there broccolism! 👋

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