refactor: 💡 change inputs to readonly and update submit button

Per a11y audit, this changes the input fields to readonly instead of
disabled. It also updates the submit button text so that it is context
based and has an aria-label for screenreaders.

✅ Closes: FE-112

Author: venusang

ui/admin/app/components/form/user/index.hbs

@@ -16,7 +16,7 @@
     @value={{@model.name}}
     @isInvalid={{@model.errors.name}}
     @isOptional={{true}}
-    disabled={{form.disabled}}
+    readonly={{form.disabled}}
     {{on 'input' (set-from-event @model 'name')}}
     as |F|
   >
@@ -36,7 +36,7 @@
     @value={{@model.description}}
     @isInvalid={{@model.errors.description}}
     @isOptional={{true}}
-    disabled={{form.disabled}}
+    readonly={{form.disabled}}
     as |F|
   >
     <F.Label>{{t 'form.description.label'}}</F.Label>
@@ -52,7 +52,8 @@
 
   {{#if (can 'save model' @model)}}
     <form.actions
-      @enableEditText={{t 'actions.edit-form'}}
+      @enableEditText={{t 'actions.edit-user-details.button-text'}}
+      aria-label={{t 'actions.edit-user-details.aria-label'}}
       @submitText={{t 'actions.save'}}
       @cancelText={{t 'actions.cancel'}}
     />