ESLint rules: array-callback-return, no-invalid-this, func-style (#3151)

* satisfied array-callback-return rule
* satisfying no-invalid-this rule
* fixed invalid-this issues
* changed isNotEqual to arrow function
* added rule func-style
* added return false to satisfy array-callback-return rule

Co-authored-by: Joel McKinnon <jmckinnon@apple.com>
Co-authored-by: Joshi <simplyrender@gmail.com>
Co-authored-by: Andrew Henry <akhenry@gmail.com>

src/plugins/displayLayout/components/SubobjectView.vue

@@ -137,7 +137,7 @@ export default {
         setObject(domainObject) {
             this.domainObject = domainObject;
             this.currentObjectPath = [this.domainObject].concat(this.objectPath.slice());
-            this.$nextTick(function () {
+            this.$nextTick(() => {
                 let childContext = this.$refs.objectFrame.getSelectionContext();
                 childContext.item = domainObject;
                 childContext.layoutItem = this.item;