Configuration Override Warn
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This module warns you when configuration settings have been overridden by a module. It helps you identify changes made outside of the standard configuration forms.
Implements the warning message proposed by #2408549: Display status message on configuration forms when there are overridden values from one module without needing any changes to configuration forms.
This module uses PHP reflection to modify a core class method from protected to public. Typically, it is not recommended to use reflection in production code/environments, but there's no way around it for this module and it should be a minimal impact to performance since it only affects pages that have configuration forms.