Fix precision casting issue in Mac seekdb small farm

[ep-12221]

Environment

(Required) Please provide the output of bin/observer -V. If this test also involves changes to the obproxy version, please also provide the output of obproxy -V.

Is this a temporary version provided by RD?

No / Provided by xxx temporarily

Reproducibility

Consistent / Occasional / Uncertain / Other

Test Changes

Added xx test scenario / Changed to a new machine / Ran xx new tool / Issue appeared after replacing with a new version

Any other anomalies or changes in the environment?

No / Clog disk was full / Manual operation performed... / Injected xx exception

Description / Steps to Reproduce

(Required) Please describe in detail: what workload was run on the environment, what actions were taken before the issue occurred, and if there were any test changes, etc. Please provide reproduction SQL as an attachment.

Strongly discourage only posting ERROR logs or stack traces!!!

Environment Information

Please provide the connection strings for the problematic tenant and the sys tenant, as well as deployment information.
Is the scene preserved?

Log Information

Other

For issues reported by external business teams, please correctly select the "Work Item Type" on the right based on the actual situation:

• Customer Service Feedback: Specifically refers to issues before production deployment or during POC, where a product bug is clearly identified that requires a fix and a new release.
• Online Issue: An issue that occurred after production deployment, clearly identified as a product bug, but not classified as a fault.
• Online Fault: An issue that occurred after production deployment, clearly identified as a product bug, which caused business errors or public relations impact on the customer side. (The final decision on fault classification rests with the delivery service team).