Breaking: #74029 - Remove ModuleLoader->getRelativePath()

See forge#74029

Description

The method ModuleLoader->getRelativePath() has been removed. It was previously part when registering traditional script-based modules, which did not use the new Icon API for the backend.

Impact

Calling the method above directly will result in a fatal PHP error.

Affected Installations

Any installation working with extensions that set up the ModuleLoader class and call the method getRelativePath() directly.

Migration

Use PathUtility::getRelativePath() when the functionality is still needed.