Backend modules cannot be accessed by editors in v12

[tillhoerner]

It is not possible to grant editors access to the backend modules. This is because in Configuration/Backend/Modules.php the access option is set to 'group,user', which is not a valid option and should be changed to just 'user'

[SSFGizmo]

• https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ExtensionArchitecture/HowTo/BackendModule/ModuleConfiguration.html#access