planner/core: refresh stale regions in cache for batch cop response (#24457) #24612
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cherry-pick #24457 to release-5.0
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# In tidb repo: git pr https://github.com/pingcap/tidb/pull/24612
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What problem does this PR solve?
Issue Number: close pingcap/tiflash#1873
What is changed and how it works?
What's Changed:
add retry regions in Batch cop response. then refresh the stale regions in cache.
Related changes
pingcap/kvproto#761
Check List
Tests
Release note