Migrate change-password form to HDS input fields. (#1460)

* refactor: 💡 update scope form to use HDS input and textarea

* chore: 🤖 tweak "optional" label text color in dark mode

* fix: 🐛 add HDS field margins and fix form tests

* fix: 🐛 fix acceptance tests and add TextInput event handlers

* refactor: 💡 migrate change-password form to HDS inputs

* fix: 🐛 use input event and fix set-from-event to handle empty

* chore: 🤖 reverse order of isRequired and isOptional

* fix: 🐛 use @type as required by HDS

* chore: 🤖 fix linting

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

@@ -7,8 +7,8 @@
 >
 
   <Hds::Form::TextInput::Field
-    @isOptional={{true}}
     @isRequired={{false}}
+    @isOptional={{true}}
     @value={{@model.name}}
     @isInvalid={{@model.errors.name}}
     @type='text'
@@ -29,8 +29,8 @@
   </Hds::Form::TextInput::Field>
 
   <Hds::Form::Textarea::Field
-    @isOptional={{true}}
     @isRequired={{false}}
+    @isOptional={{true}}
     @value={{@model.description}}
     @isInvalid={{@model.errors.description}}
     name='description'