cubicweb #1767090 entity.cw_metainformation should return the actual source, not the physical source [resolved]

eg when an entity is coming from a datafeed source, cw_metainformation should return it, not the system source

prioritynormal
typebug
done in3.13.1
load0.700
load left0.000
closed by#570522300e22 [ms, entity metas] add 'actual source' to entities table / base entity metadata cache. Closes #1767090