[Backport: Redwood] fix: searching tag refinement was sometimes not working

[bradenmacdonald]

This is a backport of #34933 to fix openedx/modular-learning#224 in Redwood.

See #34933 for details on how to test the fix.

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[openedx-webhooks]

Thanks for the pull request, @bradenmacdonald! Please note that it may take us up to several weeks or months to complete a review and merge your PR.

Feel free to add as much of the following information to the ticket as you can:

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• Open edX discussion forum threads
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[openedx-webhooks]

Thanks for the pull request, @bradenmacdonald! Please note that it may take us up to several weeks or months to complete a review and merge your PR.

Feel free to add as much of the following information to the ticket as you can:

• supporting documentation
• Open edX discussion forum threads
• timeline information ("this must be merged by XX date", and why that is)
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All technical communication about the code itself will be done via the GitHub pull request interface. As a reminder, our process documentation is here.

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[rpenido]

LGTM @bradenmacdonald! 👍

• I tested this following the testing instructions
• I read through the code and considered the security, stability and performance implications of the changes.
• I tested that the UI can be used with a keyboard only (tab order, keyboard controls).
• Includes tests for bugfixes and/or features added.

[pomegranited]

👍

• I tested this on my redwood tutor dev stack.
• I checked the code against the original PR

[openedx-webhooks]

@bradenmacdonald 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.