Fix RequestLaunchPosition (e2a076c)

src/cascadia/TerminalApp/TerminalPage.cpp

@@ -1955,7 +1955,7 @@ namespace winrt::TerminalApp::implementation
  // We don't actually know our own position. So we have to ask the window
  // layer for that.
  const auto launchPosRequest{ winrt::make<LaunchPositionRequest>() };
- RequestLaunchPosition.raise(*this, launchPosRequest);
+ _RequestLaunchPositionHandlers(*this, launchPosRequest);
  layout.InitialPosition(launchPosRequest.Position());
 
  ApplicationState::SharedInstance().AppendPersistedWindowLayout(layout);