fix: relation picker page size refused by entry list

docs/releases/v3.5.1-beta.md

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+This release fixes the Relation field picker, which could not load any entries.
+
+## Improvements and fixes
+
+- Choosing a target for a Relation field no longer fails with "Couldn't load" and a `400` error. The picker asked for pages of 10 entries, a size the entry list refuses, and now asks for 25.
+
+## Upgrading
+
+- Replace the binary, or pull the new image. No schema migration and no new environment variable.