the value of tikv-client.store-liveness-timeout should not less than 0

[seiya-annie]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

param: tikv-client.store-liveness-timeout: "1s"
the value of this config should : >=0.
store-liveness-timeout =0, means close the function of check tikv status port.

2. What did you expect to see? (Required)

if set store-liveness-timeout = -1, report error in log.

3. What did you see instead (Required)

set successfully, and no error

4. What is your TiDB version? (Required)

v5.0.0

[Howie59]

/assign

[ti-srebot]

Please edit this comment or add a new comment to complete the following information

Not a bug

1. Remove the 'type/bug' label
2. Add notes to indicate why it is not a bug

Duplicate bug

1. Add the 'type/duplicate' label
2. Add the link to the original bug

Bug

Note: Make Sure that 'component', and 'severity' labels are added
Example for how to fill out the template: #20100

1. Root Cause Analysis (RCA) (optional)

2. Symptom (optional)

3. All Trigger Conditions (optional)

4. Workaround (optional)

5. Affected versions

6. Fixed versions