locate: fix the default settings of circuit breaker

[rleungx]

ref tikv/pd#8678
The default settings are wrong, the unit should be the second.

[rleungx]

/cc @Tema @okJiang

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bufferflies, MyonKeminta, okJiang

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[LGTM Timeline notifier]

Timeline:

• 2025-02-25 10:07:37.013447892 +0000 UTC m=+350404.966606159: ☑️ agreed by bufferflies.
• 2025-02-25 10:16:41.454576603 +0000 UTC m=+350949.407734867: ☑️ agreed by MyonKeminta.