Fix: DataContract entity endpoint fails with 400 for entities without dataProducts field (open-metadata#27861)

Author: Rohit0301

openmetadata-service/src/main/java/org/openmetadata/service/resources/data/DataContractResource.java

@@ -330,8 +330,13 @@ public DataContract getByEntityId(
     // the entity (e.g. a parquet container's dataModel can be MBs of column-schema
     // metadata). For containers this single line drove the endpoint past the
     // 1-minute timeout in production. Limit the fetch to the only field we need.
+    boolean supportsDataProducts =
+        Entity.getEntityRepository(entityType)
+            .getAllowedFields()
+            .contains(Entity.FIELD_DATA_PRODUCTS);
     EntityInterface entity =
-        Entity.getEntity(entityType, entityId, "dataProducts", Include.NON_DELETED);
+        Entity.getEntity(
+            entityType, entityId, supportsDataProducts ? "dataProducts" : "", Include.NON_DELETED);
     DataContract dataContract = repository.getEffectiveDataContract(entity);
 
     if (dataContract == null) {