additional heuristic for template parsing handling multiple outputs

[mwdchang]

Summary

This address an incorrect assumption we made earlier that a transition's signature/key can be calculated from its input and output component, for the purpose of calculating transition groups. This is not the case, e.g we can have this scenario:

transition1_xx: [ input: [a], output: [b] }
transition2_yy: [ input: [a], output: [b] }

Where we would want to keep these transitions as different groups. To do this we add the base transition name as part of the key.

Testing

The model
pascale-strata-problem-templates.json, when loaded into Terarium should look like

Instead of:

Note the correct version should have 4 transition matrices instead of 3.

[YohannParis]

LGTM