Add test coverage for creator list filter whitespace normalization

[Chucks1093]

Summary
Add test coverage for creator list filter whitespace normalization

Scope

• add integration/unit coverage for whitespace-heavy filter inputs\n- assert normalized behavior matches query parser rules\n- keep test fixtures compact and deterministic

Acceptance Criteria

• scoped change is implemented with no unrelated file churn
• docs/tests are updated where applicable
• contributor can validate the outcome locally

Contributor coordination: if you pick this up, reach out in Telegram for updates or clarification: https://t.me/accesslayerorg

[The-Big-Danny]

@The-Big-Danny has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hello, I'd love to work on this issue immediately

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[eischideraa-unn]

@eischideraa-unn has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hi... i have reviewed the issue and i'll love to work on it. ETA:8 hours

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[vicistar-star]

@vicistar-star has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Please assign me this issue

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[Johnsmichael150]

@Johnsmichael150 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I would like to work on this issue

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Congratulations, @Johnsmichael150! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

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[drips-wave]

This issue has been completed by @Johnsmichael150 as part of the Stellar Wave Program's 4th Wave 🥳

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