fix: Fix NVDA menu item counts that are broken by <form> (primer#2822)

Author: smockle

.changeset/gorgeous-turtles-agree.md

@@ -0,0 +1,5 @@
+---
+"@primer/view-components": patch
+---
+
+Fix NVDA menu item counts that are broken by using '<form>' inside an 'ActionMenu'.

app/components/primer/alpha/action_menu/list.rb

@@ -89,6 +89,12 @@ def add_item(item, to:)
         def organize_arguments(data: {}, **system_arguments)
           content_arguments = system_arguments.delete(:content_arguments) || {}
 
+          # When a form is inside a menu, suppress form semantics.
+          # Otherwise, NVDA will miscount menu items.
+          form_arguments = system_arguments.delete(:form_arguments) || {}
+          form_arguments[:html] = form_arguments[:html] || {}
+          form_arguments[:html][:role] = :none
+
           if system_arguments[:tag] && ITEM_TAG_OPTIONS.include?(system_arguments[:tag])
             content_arguments[:tag] = system_arguments[:tag]
           end
@@ -115,7 +121,7 @@ def organize_arguments(data: {}, **system_arguments)
             )
           end
 
-          { data: data, **system_arguments, content_arguments: content_arguments }
+          { data: data, **system_arguments, content_arguments: content_arguments, form_arguments: form_arguments }
         end
       end
     end