Revert "Merge pull request #27586 from maclover7/jm-fix-27584"

This reverts commit 5eff7a9c, reversing
changes made to 5f03172f.

Reason: It caused a regression. The test case is on the PR.

actionpack/lib/action_controller/test_case.rb

@@ -389,7 +389,9 @@ def determine_default_controller_class(name)
       # Note that the request method is not verified. The different methods are
       # available to make the tests more expressive.
       def get(action, **args)
-        process(action, method: "GET", **args)
+        res = process(action, method: "GET", **args)
+        cookies.update res.cookies
+        res
       end
 
       # Simulate a POST request with the given parameters and set/volley the response.
@@ -517,7 +519,6 @@ def process(action, method: "GET", params: {}, session: nil, body: nil, flash: {
             unless @request.cookie_jar.committed?
               @request.cookie_jar.write(@response)
               cookies.update(@request.cookie_jar.instance_variable_get(:@cookies))
-              cookies.update(@response.cookies)
             end
           end
           @response.prepare!

actionpack/test/dispatch/cookies_test.rb

@@ -395,15 +395,6 @@ def test_deleted_cookie_predicate
     assert_equal false, cookies.deleted?("another")
   end
 
-  # Ensure all HTTP methods have their cookies updated
-  [:get, :post, :patch, :put, :delete, :head].each do |method|
-    define_method("test_deleting_cookie_#{method}") do
-      request.cookies[:user_name] = "Joe"
-      public_send method, :logout
-      assert_nil cookies[:user_name]
-    end
-  end
-
   def test_deleted_cookie_predicate_with_mismatching_options
     cookies[:user_name] = "Joe"
     cookies.delete("user_name", path: "/path")