fix: remove plugin-express

[yimingjfe]

Summary

There is still a plugin-express in the test cases, because the function mode in BFF is removed, it can't be compatible with plugin-express, and caused the test cases to fail, so here we remove the plugin-express in the test cases.

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Checklist

• I have added changeset via pnpm run change.
• I have updated the documentation.
• I have added tests to cover my changes.

[changeset-bot]

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Latest commit: 293714c

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