AbstractBindingRuntimeContext is using getOriginalDefinition() to then lookup a schema. This is a bit weird, but at any rate we should get the required mapping knowledge from mdsal-binding-generator when it instantiates BindingRuntimeTypes.

Update GeneratorReactor to give us a lookup table, which will contain the direct results (for augmentations which actually have an original, i.e. the map should not cover all augmentations) and use that knowledge.