Allow walking of schema for items keyword when non-array node is provided (#786)

Author: anjnerajat

src/main/java/com/networknt/schema/ItemsValidator202012.java

@@ -101,6 +101,8 @@ public Set<ValidationMessage> walk(JsonNode node, JsonNode rootNode, String at,
                 // Walk the schema.
                 walkSchema(this.schema, n, rootNode, atPath(at, i), shouldValidateSchema, validationMessages);
             }
+        } else {
+            walkSchema(this.schema, node, rootNode, at, shouldValidateSchema, validationMessages);
         }
 
         return validationMessages;

src/main/java/com/networknt/schema/UnevaluatedPropertiesValidator.java

@@ -25,7 +25,7 @@
 public class UnevaluatedPropertiesValidator extends BaseJsonValidator {
     private static final Logger logger = LoggerFactory.getLogger(UnevaluatedPropertiesValidator.class);
 
-    private static final String UNEVALUATED_PROPERTIES = "com.networknt.schema.UnevaluatedPropertiesValidator.UnevaluatedProperties";
+    public static final String UNEVALUATED_PROPERTIES = "com.networknt.schema.UnevaluatedPropertiesValidator.UnevaluatedProperties";
 
     private final JsonSchema schema;