Ensure rack.response_finished callback handles receiving arguments

Follow up to rails#55425, which was not
compliant with the Rack SPEC.

Author: adrianna-chang-shopify

actionpack/lib/action_dispatch/middleware/executor.rb

@@ -13,7 +13,7 @@ def initialize(app, executor)
     def call(env)
       state = @executor.run!(reset: true)
       if response_finished = env["rack.response_finished"]
-        response_finished << -> { state.complete! }
+        response_finished << proc { state.complete! }
       end
 
       begin

actionpack/test/dispatch/executor_test.rb

@@ -180,7 +180,7 @@ def test_complete_callbacks_are_called_on_rack_response_finished
     assert_not completed
 
     assert_equal 1, env["rack.response_finished"].size
-    env["rack.response_finished"].first.call
+    env["rack.response_finished"].first.call({}, 200, {}, nil)
 
     assert completed
   end
@@ -199,7 +199,7 @@ def test_complete_callbacks_are_called_once_on_rack_response_finished_when_excep
     end
 
     assert_equal 1, env["rack.response_finished"].size
-    env["rack.response_finished"].first.call
+    env["rack.response_finished"].first.call({}, 200, {}, nil)
 
     assert_equal 1, completed_count
   end