fix(i18n): refine zh-TW product update copy

[benjiaming]

Summary

• update the Traditional Chinese September product-update description to use 自訂代理程式

Test plan

• ./gradlew :metadata-service:configuration:productUpdateReleaseSyncCheck --rerun-tasks

  

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Summary by cubic

Updates the Traditional Chinese September product-update description to use 自訂代理程式 instead of 自訂智慧代理 for clearer, more accurate terminology.

^{Written for commit bb7523f. Summary will update on new commits.}

[cursor]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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