If the configuration has translations the output of the langcode is the following:
[notice] views.view.news (@langcode) rewritten by my_module
[notice] views.view.news (@langcode) rewritten by my_module
Bug can be found here:
https://git.drupalcode.org/project/config_rewrite/-/blob/8.x-2.x/src/Con...
Create a multilingual configuration rewrite.
Proposed fix: Include the langcode in message attributes.
The result would something like:
[notice] views.view.news (fi) rewritten by my_module
[notice] views.view.news (sv) rewritten by my_module