ACL: ACLs with leading/trailing spaces in principal names not shown in table

[polegkashti]

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 main-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)

When an ACL is created with trailing or leading spaces (e.g., in the principal name), it does not appear in the ACL table on the Kafka UI. However, the ACL is correctly saved in Kafka with the spaces, and this discrepancy only becomes evident when using the Kafka CLI. This makes it difficult to identify ACLs with spaces through the UI.

Expected behavior

The ACL table in the Kafka UI should display the ACLs exactly as they are saved in Kafka, including any trailing or leading spaces in principal names or other fields. This ensures that users can see ACLs as they exist in Kafka, avoiding confusion.

Your installation details

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Steps to reproduce

1. Create a new ACL with trailing or leading spaces in the principal name (e.g., "user " or " user").
2. Go to the ACL page in Kafka UI.
3. Observe that the newly created ACL is not displayed in the table.
4. Use the Kafka CLI or F12 to check the saved ACL and note that it exists with the spaces.

Screenshots

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Logs

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Additional context

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