[HttpFoundation] UploadedFiles deprecations

This fixes #9005

Author: Henry Snoek

controller/upload_file.rst

@@ -195,6 +195,11 @@ There are some important things to consider in the code of the above controller:
    use the :method:`Symfony\\Component\\HttpFoundation\\File\\UploadedFile::guessExtension`
    method to let Symfony guess the right extension according to the file MIME type;
 
+.. versionadded:: 4.1
+    The :method:`Symfony\\Component\\HttpFoundation\\File\\UploadedFile::getClientSize`
+    method was deprecated in Symfony 4.1 and will be removed in Symfony 5.0.
+    Use ``getSize()`` instead.
+
 You can use the following code to link to the PDF brochure of a product:
 
 .. configuration-block::

testing.rst

@@ -416,7 +416,7 @@ or perform more complex requests. Some useful examples::
         '/path/to/photo.jpg',
         'photo.jpg',
         'image/jpeg',
-        123
+        null
     );
     $client->request(
         'POST',