[9.0] Adjust unpromotable shard refresh request validation to allow RefreshResult.NO_REFRESH#129334

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elasticsearchmachine merged 2 commits intoelastic:9.0from

tlrx:2025/06/10/fix-129036-9.0

Jun 12, 2025

Commits on Jun 12, 2025

When a primary shard uses the read-only engine, it always returns a RefreshResult.NO_REFRESH for refreshes. Since #93600 we added an extra roundtrip to hook unpromotable shard refresh logic. This h…
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