TestRoundTripQueryCacheWithShardingMiddleware is flaky

[machine424]

See https://github.com/thanos-io/thanos/actions/runs/12437047229/job/34726127667?pr=8014#step:7:97

In a PR with changes unrelated to that test in #8014

Thanos, Prometheus and Golang version used:

Object Storage Provider:

What happened:

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Full logs to relevant components:

Anything else we need to know:

[machine424]

Same for TestReloader_ConfigDirApplyBasedOnWatchInterval and TestReloader_ConfigDirApply https://github.com/thanos-io/thanos/actions/runs/12437330470/job/34726968522?pr=8014#step:7:121