Information content values not being calculated correctly for conflated cliques

[gaurav]

Looking at the source code for normalization, it looks like to me like the info_content value is only being loaded for the conflation clique leader, not for individual values within a clique:

NodeNormalization/node_normalizer/normalizer.py

Line 562 in b4f558e

info_contents = await get_info_content(app, canonical_nonan)

We currently set things up so that conflationed IDs with smaller IC values are sorted to the front. The only way that (currently) you could get a lower ID later in the sequence is if there's a CURIE with an IC and a prefix that's later in the order than other values, but at the moment CHEBIs for chemicals and NCBIGene identifiers for genes are the only conflated prefixes we have with ICs. So I will need to come up with a test case to test this. I started investigating this in PR #366.