Refactor upgrade ember 4 (#1501)

Upgrade Ember 4

Co-authored-by: Randall Morey <randall@randallmorey.com>
Co-authored-by: Zhihe Li <zhihe.li@hashicorp.com>

addons/api/.ember-cli

@@ -5,5 +5,11 @@
 
     Setting `disableAnalytics` to true will prevent any data from being sent.
   */
-  "disableAnalytics": false
+  "disableAnalytics": false,
+
+  /**
+  Setting `isTypeScriptProject` to true will force the blueprint generators to generate TypeScript
+  rather than JavaScript by default, when a TypeScript version of a given blueprint is available.
+  */
+  "isTypeScriptProject": false
 }