Removed ability to change display name if account is verified

if account is verified, display name input in settings is not visible
if attempting to change the display name by other means, an error is return and you are redirected

app/controllers/settings/profiles_controller.rb

@@ -16,6 +16,11 @@ class Settings::ProfilesController < Settings::BaseController
   end
 
   def update
+    # if verified and display_name is different, return flash error and redirect back
+    if @account.is_verified && @account.display_name != params[:account][:display_name]
+      flash[:alert] = 'Unable to change Display name for verified account'
+      redirect_to settings_profile_path
+    else
       if UpdateAccountService.new.call(@account, account_params)
         ActivityPub::UpdateDistributionWorker.perform_async(@account.id)
         redirect_to settings_profile_path, notice: I18n.t('generic.changes_saved_msg')
@@ -24,6 +29,7 @@ class Settings::ProfilesController < Settings::BaseController
         render :show
       end
     end
+  end
 
   private
 

app/views/settings/profiles/show.html.haml

@@ -6,6 +6,11 @@
 
   .fields-row
     .fields-row__column.fields-group.fields-row__column-6
+      - if @account.is_verified
+        %span Verified accounts cannot changed display names
+        %br
+        %br
+      - else
         = f.input :display_name, wrapper: :with_label, input_html: { maxlength: 30 }, hint: false
       = f.input :note, wrapper: :with_label, input_html: { maxlength: 500 }, hint: false