Issue #3567720: Fix file_delete_update_400004 config names and field

Vladyslav Sadretdinovrequested to merge
issue/file_delete-3567720:3567720-the-immediatedelete-plugin into 3.0.x
  • Fix config names: action.system.action.* → system.action.*
  • Fix field: id → plugin (plugin ID needs updating, not config entity ID)

Closes #3567720

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