Release 8.5 20260225#1925

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ClamChowderTiDB wants to merge 13 commits into

tikv:release-8.5-20260225from

ClamChowderTiDB:release-8.5-20260225

Commits on Mar 27, 2026

sync etcd endpoints immediately after initializing the client (#1573)
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retry as stale read on replica (#1509)
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retry stale read as stale if leader is not accessible (#1566)
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snapshot: set `ReplicaRead` to false when `ReplicaReadType` fallbacks…
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replica selector: do not send replica-read to leader (#1719) (#1724)
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*: reduce overhead of kv client (#1737)
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Revert "*: reduce overhead of kv client (#1737)"
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add logs to debug leader not found issue in UDS
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retry on leader for region not available (#1769)
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client: pre-encode request before sending to batch-send-loop (#1841) …
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fix inconsistent store pointers between the region-cache and store-ca…
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fast reload region on no-region-found error (#1891) (#1896)
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hard-invalidate region on RegionNotFound instead of async reload (#1916)
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