Nudge contrib into overriding \Drupal\Core\TypedData\TypedData::setValue() consistently.

A) I anticipate that contrib modules will commonly want to override \Drupal\Core\TypedData\TypedData::setValue()

B) Within Drupal core modules, this is a common enough task :-

\Drupal\Core\Field\FieldItemBase:setValue()
\Drupal\Core\TypedData\Plugin\DataType\Binary::setValue()
\Drupal\Core\TypedData\Plugin\DataType\ItemList::setValue()
\Drupal\Core\TypedData\Plugin\DataType\Language::setValue()
\Drupal\Core\TypedData\Plugin\DataType\Map::setValue()

Speaking constructively, core's consistency in approach to overriding this function is patchy. I would like contrib to be better.
This is in part due to the evolving documentation, and I want to improve the guidance regarding an exception.

BOTH

\Drupal\Core\TypedData\Plugin\DataType\Language::setValue()
\Drupal\Core\TypedData\Plugin\DataType\Map:setValue

throw \InvalidArgumentException when appropriate.

It is a simple 2 line fix.