OG File only works with node entity based OG

Card

OG File, in certain circumstances, denies access, in spite of the user having proper OG access.

Conversation

OG allows for other entity types to be used for group access, but OG File assumes Node as the entity type used to provide access.

Confirmation

ogfile_file_entity_access returns FILE_ENTITY_ACCESS_ALLOW if the user is part an organic group with permissions to access the file, regardless of what entity type is used by Organic Groups to determine group access.