DEV: replaces topic-notifications-options by DMenu (#30298)

This commit introduces <NotificationsTracking /> which is a wrapper component around <DMenu /> which replaces the select-kit component <TopicNotificationsButton />.

Each tracking case has its dedicated component:

- topic -> `<TopicNotificationsTracking />`
- group -> `<GroupNotificationsTracking />`
- tag -> `<TagNotificationsTracking />`
- category -> `<CategoryNotificationsTracking />`
- chat thread -> `<ThreadNotificationsTracking />`

spec/system/page_objects/components/notifications_tracking.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+module PageObjects
+  module Components
+    class NotificationsTracking < PageObjects::Components::Base
+      attr_reader :context
+
+      def initialize(context)
+        @context = context
+      end
+
+      def toggle
+        trigger.click
+        self
+      end
+
+      def select_level_id(id)
+        content.find("[data-level-id='#{id}']").click
+        self
+      end
+
+      def select_level_name(name)
+        content.find("[data-level-name='#{name}']").click
+        self
+      end
+
+      def has_selected_level_name?(name)
+        find("[data-trigger][data-identifier='#{identifier}'][data-level-name='#{name}']")
+      end
+
+      def has_selected_level_id?(id)
+        find("[data-trigger][data-identifier='#{identifier}'][data-level-id='#{id}']")
+      end
+
+      def trigger
+        if @context.is_a?(Capybara::Node::Element)
+          @context
+        else
+          find(@context)
+        end
+      end
+
+      def content
+        find("[data-content][data-identifier='#{identifier}']")
+      end
+
+      def identifier
+        trigger["data-identifier"]
+      end
+    end
+  end
+end