Just open one turbo stream per card

Per comment is excessive and needless

test/controllers/cards/comments/reactions_controller_test.rb

@@ -4,10 +4,11 @@ class Cards::Comments::ReactionsControllerTest < ActionDispatch::IntegrationTest
   setup do
     sign_in_as :jz
     @comment = comments(:logo_agreement_jz)
+    @card = @comment.card
   end
 
   test "create" do
-    assert_turbo_stream_broadcasts [ @comment, :reactions ], count: 1 do
+    assert_turbo_stream_broadcasts @card, count: 1 do
       assert_difference -> { @comment.reactions.count }, 1 do
         post card_comment_reactions_url(@comment.card, @comment, format: :turbo_stream), params: { reaction: { content: "Great work!" } }
         assert_redirected_to card_comment_reactions_url(@comment.card, @comment)
@@ -16,7 +17,7 @@ class Cards::Comments::ReactionsControllerTest < ActionDispatch::IntegrationTest
   end
 
   test "destroy" do
-    assert_turbo_stream_broadcasts [ @comment, :reactions ], count: 1 do
+    assert_turbo_stream_broadcasts @card, count: 1 do
       assert_difference -> { @comment.reactions.count }, -1 do
         delete card_comment_reaction_url(@comment.card, @comment, reactions(:kevin), format: :turbo_stream)
         assert_response :success