minor #18511 [Form] Deprecate not setting a value for widget option of date/time types (javiereguiluz)

This PR was merged into the 6.3 branch.

Discussion
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[Form]  Deprecate not setting a value for widget option of date/time types

Related to #18507.

Commits
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950b472 [Form] Deprecate not setting a value for widget option of date/time types

Author: javiereguiluz

reference/forms/types/options/date_widget_description.rst.inc

@@ -10,3 +10,8 @@ following:
 
 * ``single_text``: renders a single input of type ``date``. User's input
   is validated based on the `format`_ option.
+
+.. deprecated:: 6.3
+
+    Not setting a value explicitly for this option is deprecated since Symfony 6.3
+    because the default value will change to ``single_text`` in Symfony 7.0.