Replaced Object.hasOwnProperty usages with loadsh _.has for safe access

Author: Vishal Shingala

lib/31XUtils/schemaUtils31X.js

@@ -154,7 +154,7 @@ module.exports = {
     const resolvedSchema = _.cloneDeep(refSchema),
       outerKeys = Object.keys(outerProps);
     outerKeys.forEach((key) => {
-      if (_.has(resolvedSchema, key)) {
+      if (_.isObject(resolvedSchema) && _.isObject(outerProps)) {
         resolvedSchema[key] = (resolvedSchema[key] && Array.isArray(resolvedSchema[key])) ?
           [...new Set([...resolvedSchema[key], ...outerProps[key]])] :
           outerProps[key];