Render the boosts a message has preloaded instead of querying them again

Pages of messages load them with_presentation, which preloads each
message's boosts with their boosters and avatars, but the boosts partial
asked for message.boosts.ordered: a new query for every message, and the
preloaded boosts went unused. Sort the preloaded boosts in Ruby. The
boosts frame, whose message comes without them, still queries them in
order with their boosters.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0142qgjggdJ2KDdGk7RF9Xm9

test/controllers/messages_caching_test.rb

@@ -53,6 +53,20 @@ class MessagesCachingTest < ActionDispatch::IntegrationTest
     end
   end
 
+  test "messages render their preloaded boosts in order without querying them again" do
+    earlier = messages(:fourth).boosts.create! booster: users(:jason), content: "🥇", created_at: 1.day.ago
+    in_order = [ dom_id(earlier), dom_id(boosts(:fourth_by_bender)) ]
+
+    assert_no_queries_match(/ORDER BY "boosts"/) do
+      get room_messages_url(rooms(:watercooler))
+    end
+    assert_response :success
+    assert_equal in_order, css_select("##{dom_id(messages(:fourth), :boosts)} .boost").map { it["id"] }
+
+    get message_boosts_url(messages(:fourth))
+    assert_equal in_order, css_select("##{dom_id(messages(:fourth), :boosts)} .boost").map { it["id"] }
+  end
+
   private
     def with_memory_cache
       old_cache = Rails.cache