minor symfony#10512 Mentioned the new file upload exception classes (javiereguiluz)

This PR was squashed before being merged into the 4.1 branch (closes symfony#10512).

Discussion
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Mentioned the new file upload exception classes

Fixes symfony#9642.

Commits
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1ea6d88 Mentioned the new file upload exception classes

Author: javiereguiluz

controller/upload_file.rst

@@ -255,6 +255,21 @@ logic to a separate service::
         }
     }
 
+.. tip::
+
+    In addition to the generic :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\FileException`
+    class there are other exception classes to handle failed file uploads:
+    :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\CannotWriteFileException`,
+    :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\ExtensionFileException`,
+    :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\FormSizeFileException`,
+    :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\IniSizeFileException`,
+    :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\NoFileException`,
+    :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\NoTmpDirFileException`,
+    and :class:`Symfony\\Component\\HttpFoundation\\File\\Exception\\PartialFileException`.
+
+    .. versionadded:: 4.1
+        The detailed exception classes were introduced in Symfony 4.1.
+
 Then, define a service for this class:
 
 .. configuration-block::