Remove intervening Molecular Event between MFs and black box BPs

[vanaukenk]

From the 2023-10-12 Reactome2GO NYU meeting:

When a black box reaction with a corresponding GO BP exists, remove the intervening Molecular Event between that BP and the upstream MF.

The upstream MF will be 'part of' the BP.

We will wait to see if there are any cases where this rule may not be correct, for example when a black box BP is inserted into the causal chain.

[dustine32]

For example, in test model R-HSA-9842908 GOCAM Nuclear signaling by ERBB4

[dustine32]

Following the string pattern "is xrefed to this process" to this line:

pathways2GO/exchange/src/main/java/org/geneontology/gocam/exchange/BioPaxtoGO.java

Line 1609 in d199888

go_cam.addLabel(bp_i, "reaction:"+entity_name+": is xrefed to this process");

This block should be where we can plug in the change.