test: login_flow waits out the 300 ms inventory/safebox refresh before dragging

CPythonNetworkStream::GamePhase throttles RefreshInventory/RefreshSafebox to
one call per 300 ms, so the bag slot could still be empty in the UI when the
test clicked it right after player state changed (~1 in 3 runs failed).
Also drops a leftover debug printf from CWindowManager::RunMouseMove.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/port/EterPythonLib/PythonWindowManager.cpp

@@ -808,13 +808,6 @@ namespace UI
 
 		SetMousePosition(x, y);
 		CWindow * pPointWindow = __PickWindow(m_lMouseX, m_lMouseY);
-		if (x == 470 && y == 380) {
-			std::printf(">>> C++ RunMouseMove(470, 380): m_lMouse=(%ld, %ld), pPointWindow=%s (type=%s, is_show=%d)\n",
-				m_lMouseX, m_lMouseY,
-				pPointWindow ? pPointWindow->GetName() : "NULL",
-				pPointWindow ? typeid(*pPointWindow).name() : "none",
-				pPointWindow ? pPointWindow->IsShow() : 0);
-		}
 
 		if (g_bShowOverInWindowName)
 		{