generalize handling of list query parameters in newsfragment

newsfragments/43102.significant.rst

@@ -1,5 +1,18 @@
-Change in update model endpoints (PATCH) ``update_mask``
+Change in query parameter handling for list parameters
 
-The ``update_mask`` parameter in the PATCH endpoints has been updated to explode (true) by default.
-Before: ``http://<URL>:<PORT>/<PATH>?update_mask=item1,item2``
-After: ``http://<URL>:<PORT>/<PATH>?update_mask=item1&update_mask=item2``
+The handling of list-type query parameters in the API has been updated.
+FastAPI defaults the ``explode`` behavior to ``true`` for list parameters,
+which affects how these parameters are passed in requests.
+This adjustment applies to all list-type query parameters across the API.
+
+Before:
+
+.. code-block::
+
+  http://<URL>:<PORT>/<PATH>?param=item1,item2
+
+After:
+
+.. code-block::
+
+  http://<URL>:<PORT>/<PATH>?param=item1&param=item2