Render templates without '.' in the name

Similar change as rails#298

refs:
- rails/rails#39164
- https://stackoverflow.com/questions/68836670/rails-6-1-4-deprecation-warning-rendering-actions-with

lib/web_console/testing/fake_middleware.rb

@@ -29,7 +29,7 @@ def view
 
         # extract target path from REQUEST_PATH
         def req_path(env)
-          env["REQUEST_PATH"].match(@req_path_regex)[1]
+          File.basename(env["REQUEST_PATH"].match(@req_path_regex)[1], ".*")
         end
 
         def render(template)