* Do not deepcopy in get_components_definitions
* Update Documentation & Code Style
* comment
* unused import
* Add test to ensure env vars don't overwrite _component_config
* Update Documentation & Code Style
* Add test for get_config
* Add test to show the rename is not sufficient
* Update Documentation & Code Style
* copy only if it's strictly necessary
* Update Documentation & Code Style
* Apply suggestions from code review
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Co-authored-by: tstadel <60758086+tstadel@users.noreply.github.com>