jackrabbit-nodetypes: Mandatory property ''{http://www.jcp.org/jcr/1.0}data' missing in node with types [oak:Resource]

This is due to the fact that currently only jcr:data property attributes below nt:resource types are ignored (but not below oak:Resource).

In general an improved https://jackrabbit.apache.org/filevault/vaultfs.html#Extended_File_aggregates and https://jackrabbit.apache.org/filevault/vaultfs.html#Resource_Nodes handling should be implemented which

1. detects jcr:data properties provided by binary files
2. will defer checking for mandatory missing properties until the parent node is fully processed (i.e. attributes by sibling files are processed)