br/pkg/streamhelper: stabilize flaky TestOwnerDropped#67791

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flaky-claw wants to merge 2 commits intopingcap:masterfrom

flaky-claw:flakyfixer/case_6c5faf3740de-a1

Commits on Apr 15, 2026

fix: stabilize flaky issue #67556
flaky-claw
committed

Commits on Apr 27, 2026

fix: stabilize flaky issue #67556
flaky-claw
committed