[Form] add "model_type" option to MoneyType

Author: mdoutreluingne

reference/forms/types/money.rst

@@ -76,6 +76,22 @@ If set to ``true``, the HTML input will be rendered as a native HTML5
 
     As HTML5 number format is normalized, it is incompatible with ``grouping`` option.
 
+model_type
+~~~~~
+
+**type**: ``string`` **default**: ``float``
+
+If set to ``integer``, the value will be converted to an ``integer``.
+
+.. caution::
+
+    When the value is set to ``integer``, the ``divisor`` option must not be set to ``1``,
+    to avoid losing decimals during the casting.
+
+.. versionadded:: 7.1
+
+    The ``model_type`` option was introduced in Symfony 7.1.
+
 scale
 ~~~~~