Icu 6657 auth method model fragments refactor (#1507)

* refactor: 💡 Remove fragment usage for arrays in auth method
* chore: 🤖 Remove ember-data-model-fragments

✅ Closes: ICU-6657

ui/admin/app/components/form/auth-method/index.hbs

@@ -2,6 +2,7 @@
   {{component
     (concat 'form/auth-method/' @model.type)
     model=@model
+    edit=@edit
     submit=@submit
     cancel=@cancel
     removeItemByIndex=@removeItemByIndex

ui/admin/app/components/form/auth-method/oidc/index.hbs

@@ -1,4 +1,5 @@
 <Rose::Form
+  @edit={{@edit}}
   @onSubmit={{@submit}}
   @cancel={{@cancel}}
   @disabled={{@model.isSaving}}