FIX: πŸ› category & tag search regex to support thai character (PR #10488)

This PR refers to this topic. https://meta.discourse.org/t/cannot-search-by-thai-tag/160699

Currently, advanced_filter regex will not match Thai character. image

This fix will solve the issue for searching tag & category in Thai. image

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The title of this pull request changed from β€œfix: :bug: category & tag search regex to support thai character” to "FIX: :bug: category & tag search regex to support thai character

Thanks for this PR. Can you add tests for this new functionality to ensure it is working correctly?

Thanks for this PR. Can you add tests for this new functionality to ensure it is working correctly?

Test added, please review.

PR looks good to me thank you @siriwatk-tw

This pull request has been mentioned on Discourse Meta. There might be relevant details there:

https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/7