add note on change of shui:valueQuery signature.

Author: rpietzsch

docs/release-notes/corporate-memory-25-3/index.md

@@ -266,3 +266,5 @@ We are excited to announce cmemc v25.5.0, which introduces new features, improve
 ### eccenca Explore
 
 -   With the deprecation of the assistance feature, `assist.*` properties can be removed from your `application.yml`, they are not used any more and have been replaced by `spring.ai` configuration.
+-   If you are using (the deprecated) `shui:valueQuery` with any `sh:PropertyShape`, make sure you change the query signature to return the variable bindings `?resource` and `?graph`.
+    The UI will display an error message if this is overlooked.