message: Fis ShowHide for DefTerm
  Well this one feels dumb.
  Make sure to also initially set the visibility of ConPTY windows created for DefTerm connections.
  * [x] Closes for real.
  * [x] tested manually.
diff: @@ -340,6 +340,11 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
  THROW_IF_FAILED(ConptyResizePseudoConsole(_hPC.get(), dimensions));
  THROW_IF_FAILED(ConptyReparentPseudoConsole(_hPC.get(), reinterpret_cast<HWND>(_initialParentHwnd)));
  +
  + if (_initialVisibility)
  + {
  + THROW_IF_FAILED(ConptyShowHidePseudoConsole(_hPC.get(), _initialVisibility));
  + }
  }
  _startTime = std::chrono::high_resolution_clock::now();
  