FEATURE: One-click chat reaction settings (#32150)

Adds a one-click chat reactions setting to the chat preferences page
where members can determine what one-click reactions are shown in chat.

- Frequent: This will be the default setting. (Automatically set based
on most used chat reactions)
- Custom: Members can choose up to three reactions they want to see in
their one-click chat/DM reactions menu. Defaults are `❤️`, `👍` ,
and `😄`.


![image](https://github.com/user-attachments/assets/8913db0e-d6ec-4347-ad91-2329206b127c)

This pull request is essentially the work of @dsims in
https://github.com/discourse/discourse/pull/31761

---------

Co-authored-by: dsims <1041068+dsims@users.noreply.github.com>

plugins/chat/spec/system/page_objects/chat/chat_channel.rb

@@ -151,6 +151,10 @@ module PageObjects
         within(message_reactions_list(message)) { return find("[data-emoji-name=\"#{emoji}\"]") }
       end
 
+      def find_quick_reaction(emoji_name)
+        find(".chat-message-actions [data-emoji-name=\"#{emoji_name}\"]")
+      end
+
       def has_reaction?(message, emoji, text = nil)
         within(message_reactions_list(message)) do
           has_css?("[data-emoji-name=\"#{emoji}\"]", text: text)

plugins/chat/spec/system/page_objects/pages/user_preferences_chat.rb

@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+module PageObjects
+  module Pages
+    class UserPreferencesChat < PageObjects::Pages::Base
+      def visit
+        page.visit("/my/preferences/chat")
+        self
+      end
+
+      def emoji_picker_triggers
+        all(".emoji-picker-trigger", visible: true)
+      end
+
+      def reaction_buttons
+        all(".emoji-pickers button")
+      end
+
+      def reactions_selected
+        reaction_buttons.map { |b| b.find("img")[:title] }
+      end
+
+      def select_option_value(selector, value)
+        select_kit = PageObjects::Components::SelectKit.new(selector)
+        select_kit.expand
+        select_kit.select_row_by_value(value)
+      end
+
+      def selected_option_value(selector)
+        PageObjects::Components::SelectKit.new(selector).value
+      end
+
+      def save_changes_and_refresh
+        page.find(".save-changes").click
+        # reloading the page happens in JS on save but capybara doesnt wait for it
+        # which can mess up navigating away too soon in tests
+        # so doing a manual refresh here to mimic
+        page.refresh
+      end
+    end
+  end
+end