refactor: 💡 move masked text string into component

addons/core/translations/form/en-us.yaml

@@ -108,5 +108,3 @@ email:
   label: Email
 full_name:
   label: Full Name
-secret:
-  label: ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

ui/desktop/app/components/hidden-secret/index.hbs

@@ -5,6 +5,6 @@
     @buttonText={{t 'actions.copy-to-clipboard'}}
     @acknowledgeText={{t 'states.copied'}}
   >
-    <span>{{t 'form.secret.label'}}</span>
+    <span>{{this.textMask}}</span>
   </Copyable>
 </div>

ui/desktop/app/components/hidden-secret/index.js

@@ -0,0 +1,5 @@
+import Component from '@glimmer/component';
+
+export default class HiddenSecretComponent extends Component {
+  textMask = '■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■';
+}