Revert "GH-1148 Remove manual setting of ObjectMapper feature"

This reverts commit 812c39e.

Author: olegz

spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/config/ContextFunctionCatalogAutoConfiguration.java

@@ -24,6 +24,7 @@
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 
+import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.google.gson.Gson;
@@ -221,6 +222,7 @@ private JsonMapper jackson(ApplicationContext context) {
 				mapper = new ObjectMapper();
 			}
 			mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
+			mapper.configure(DeserializationFeature.FAIL_ON_TRAILING_TOKENS, true);
 			return new JacksonMapper(mapper);
 		}
 	}