Check what happens when coercing an illegal string to a datatype

[matentzn]

Unit Test: treu on a predominantly boolean property -> What happens.

Originally posted by @matentzn in VirtualFlyBrain/vfb-pipeline-config#12 (comment)

[matentzn]

Neo4J fails hard. To help with debugging, I have added now this message whenever the error is thrown:

ERROR: org.neo4j.graphdb.QueryExecutionException: Property values can only be of primitive types or arrays thereof 2.663 sec
Debugging assistant: This error often (not always!) occurs in conjunction with the dynamic type coercing function (example: properties with more than 1 datatype associated with it in the ontology, say 200 Boolean values and 10 String values, get coerced to Boolean). Search the log the the 'Typing report for' the property for more information.

The corresponding typing report in the log looks like this:

INFO: Typing report for testBooleanVoteCoerce (threshold 0.66): STRONG WARNING: More than one type recorded, ambiguous typing! String: 1 (0.33); Boolean: 2 (0.67);  1.093 sec