Non defined columns appear in schema

TCK connectors are received non-defined columns in the schema when the primary key was declared on the Studio side. Component runtime doesn't filter them out.

It happens during the "inferSchema"
https://github.com/Talend/component-runtime/blob/42034d4757009efd1957e228ff2e4fd66e09014b/component-studio/component-runtime-di/src/main/java/org/talend/sdk/component/runtime/di/record/DiRowStructVisitor.java#L211-L213

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Suggestion:
We can mark generated fields in rowStruct classes with "special" annotation to be able to filter out those kinds of fields.
@AuxilaryField - or smth like that.
The annotation should be reachable for studio and components runtime.