slow test `TestStatWorkRecoverFromPanic` in `pkg/domain` pkg

## Bug Report

Average timecost was 112070.0000ms between TIMESTAMP("2024-01-08") AND TIMESTAMP("2024-01-30")

Found records: 1 (filter only for runs that timecost >= threshold)
Max timecost: 112070ms
Min timecost: 112070ms
Avg timecost: 112070.0000ms

- [CI build](https://do.pingcap.net/jenkins/job/pingcap/job/tidb/job/ghpr_unit_test/1308/): used 112070ms

Locate the slow test TestStatWorkRecoverFromPanic in the pkg/domain package and first run it to confirm the reported timing. Compare its behavior with the intended panic-recovery test, then identify a change that reduces its runtime without losing coverage; done means the test remains passing and no longer accounts for the reported CI delay.

Written by the indexing model from the issue text.