Designer Plugin does not support function parameters with default value as component variable

Summary

Designer Plugin marks as error function parameters with default value as component variable, error is: Reference to a static value was expected instead of variable `@EPTF_HTTP_Definitions.EPTF_HTTP_LGen_CT.v_EPTF_HTTP_myBIdx'

Steps and/or TTCN-3 code to reproduce

  function f_getIndex(in integer pl_Idx := myIdx) runs on CT return integer {
    log(pl_Idx);
  }

And define CT with 'integer myIdx' component variable.

/cc @aknappqwt @mmagyari