[4.2.x] Fixed #35627 -- Raised a LookupError rather than an unhandled ValueError in get_supported_language_variant().

LocaleMiddleware didn't handle the ValueError raised by
get_supported_language_variant() when language codes were
over 500 characters.

Regression in 9e9792228a6bb5d6402a5d645bc3be4cf364aefb.

Backport of 0e94f292cda632153f2b3d9a9037eb0141ae9c2e from main.

1 files changed, 3 insertions, 3 deletions

diff --git a/docs/ref/utils.txt b/docs/ref/utils.txt
index 471a4b31eb..acf7afd4a7 100644
--- a/docs/ref/utils.txt
+++ b/docs/ref/utils.txt
@@ -1156,7 +1156,7 @@ For a complete discussion on the usage of the following see the
     ``'es-ar'`` isn't.
 
     ``lang_code`` has a maximum accepted length of 500 characters. A
-    :exc:`ValueError` is raised if ``lang_code`` exceeds this limit and
+    :exc:`LookupError` is raised if ``lang_code`` exceeds this limit and
     ``strict`` is ``True``, or if there is no generic variant and ``strict``
     is ``False``.
 
@@ -1168,10 +1168,10 @@ For a complete discussion on the usage of the following see the
 
     Raises :exc:`LookupError` if nothing is found.
 
-    .. versionchanged:: 4.2.14
+    .. versionchanged:: 4.2.15
 
         In older versions, ``lang_code`` values over 500 characters were
-        processed without raising a :exc:`ValueError`.
+        processed without raising a :exc:`LookupError`.
 
 .. function:: to_locale(language)