[sync] feat(ai-gateway): multi-key rotation, BYOK circuit breaker & concurrency control T1965 (#1211)

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🔄 Automated sync from EE repository.

Source commit: teableio/teable-ee@a79183d

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Related Issues: T1965

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🧹 Preview Environment Cleanup

• PR [sync] feat(ai-gateway): multi-key rotation, BYOK circuit breaker & concurrency control T1965 (#1211) #2655 has been Closed
• Preview environment has been deleted
• Cleanup time: 2026-02-28T09:09:11.568Z