Issue #3291954: 'Run phpcbf' --standard=Drupal on form_mode_manager.

src/AbstractEntityFormModesFactory.php

src/ComplexEntityFormModes.php

src/FormModeManager.php

src/Plugin/Derivative/FormModeManagerLocalAction.php

src/Plugin/Derivative/FormModeManagerLocalTasks.php

src/SimpleEntityFormModes.php