fix: invalid flatMap to map with reduce

Author: developer-bandi

lib/rules/boolean-prop-naming.js

@@ -385,7 +385,8 @@ module.exports = {
             } else if (annotation.type === 'TSTypeReference') {
               propType = objectTypeAnnotations.get(annotation.typeName.name);
             } else if (annotation.type === 'TSIntersectionType') {
-              propType = annotation.types.flatMap((type) => objectTypeAnnotations.get(type.typeName.name));
+              propType = annotation.types.map((type) => objectTypeAnnotations.get(type.typeName.name))
+                .reduce((prev, cur) => [...prev, ...cur], []);
             }
 
             if (propType) {