Don't map id to primary key in raw_write_attribute #29464
Without the code to handle this case,
The `raw_write_attribute` method is used to update a record's attributes to reflect the new state of the database in `update_columns`. The hash provided to `update_columns` is turned into an UPDATE query directly, which means passing an `id` key results in an update to the `id` column, even if the model uses a different attribute as its primary key. When updating the record, we don't want to apply the `id` column change to the primary key attribute, since that's not what happened in the query. Without the code to handle this case, `write_attribute_with_type_cast` no longer contains any logic shared between `raw_write_attribute` and `write_attribute`, so we can inline the code into those two methods.